make const_err a hard error

src/test/mir-opt/remove-never-const.rs

@@ -6,7 +6,6 @@
 // compile-flags: --emit mir,link
 
 #![feature(never_type)]
-#![warn(const_err)]
 
 struct PrintName<T>(T);
 

src/test/ui/array-slice-vec/array_const_index-0.rs

@@ -1,8 +1,7 @@
 const A: &'static [i32] = &[];
 const B: i32 = (&A)[1];
 //~^ index out of bounds: the length is 0 but the index is 1
-//~| ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~| ERROR evaluation of constant value failed
 
 fn main() {
     let _ = B;

src/test/ui/array-slice-vec/array_const_index-0.stderr

@@ -1,23 +1,9 @@
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/array_const_index-0.rs:2:16
    |
 LL | const B: i32 = (&A)[1];
-   | ------------   ^^^^^^^ index out of bounds: the length is 0 but the index is 1
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
+   |                ^^^^^^^ index out of bounds: the length is 0 but the index is 1
 
 error: aborting due to previous error
 
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/array_const_index-0.rs:2:16
-   |
-LL | const B: i32 = (&A)[1];
-   | ------------   ^^^^^^^ index out of bounds: the length is 0 but the index is 1
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/array-slice-vec/array_const_index-1.rs

@@ -1,8 +1,7 @@
 const A: [i32; 0] = [];
 const B: i32 = A[1];
 //~^ index out of bounds: the length is 0 but the index is 1
-//~| ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~| ERROR evaluation of constant value failed
 
 fn main() {
     let _ = B;

src/test/ui/array-slice-vec/array_const_index-1.stderr

@@ -1,23 +1,9 @@
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/array_const_index-1.rs:2:16
    |
 LL | const B: i32 = A[1];
-   | ------------   ^^^^ index out of bounds: the length is 0 but the index is 1
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
+   |                ^^^^ index out of bounds: the length is 0 but the index is 1
 
 error: aborting due to previous error
 
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/array_const_index-1.rs:2:16
-   |
-LL | const B: i32 = A[1];
-   | ------------   ^^^^ index out of bounds: the length is 0 but the index is 1
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/associated-consts/defaults-not-assumed-fail.rs

@@ -6,8 +6,7 @@ trait Tr {
     // This should not be a constant evaluation error (overflow). The value of
     // `Self::A` must not be assumed to hold inside the trait.
     const B: u8 = Self::A + 1;
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of `<() as Tr>::B` failed
 }
 
 // An impl that doesn't override any constant will NOT cause a const eval error
@@ -34,7 +33,6 @@ fn main() {
     assert_eq!(<() as Tr>::B, 0);    // causes the error above
     //~^ ERROR evaluation of constant value failed
     //~| ERROR erroneous constant used
-    //~| WARN this was previously accepted by the compiler but is being phased out
 
     assert_eq!(<u8 as Tr>::A, 254);
     assert_eq!(<u8 as Tr>::B, 255);

src/test/ui/associated-consts/defaults-not-assumed-fail.stderr

@@ -1,52 +1,23 @@
-error: any use of this value will cause an error
+error[E0080]: evaluation of `<() as Tr>::B` failed
   --> $DIR/defaults-not-assumed-fail.rs:8:19
    |
 LL |     const B: u8 = Self::A + 1;
-   |     -----------   ^^^^^^^^^^^ attempt to compute `u8::MAX + 1_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
+   |                   ^^^^^^^^^^^ attempt to compute `u8::MAX + 1_u8`, which would overflow
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/defaults-not-assumed-fail.rs:34:16
+  --> $DIR/defaults-not-assumed-fail.rs:33:16
    |
 LL |     assert_eq!(<() as Tr>::B, 0);    // causes the error above
    |                ^^^^^^^^^^^^^ referenced constant has errors
 
-error: erroneous constant used
-  --> $DIR/defaults-not-assumed-fail.rs:34:5
+error[E0080]: erroneous constant used
+  --> $DIR/defaults-not-assumed-fail.rs:33:5
    |
 LL |     assert_eq!(<() as Tr>::B, 0);    // causes the error above
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: aborting due to 3 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/defaults-not-assumed-fail.rs:8:19
-   |
-LL |     const B: u8 = Self::A + 1;
-   |     -----------   ^^^^^^^^^^^ attempt to compute `u8::MAX + 1_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: erroneous constant used
-  --> $DIR/defaults-not-assumed-fail.rs:34:5
-   |
-LL |     assert_eq!(<() as Tr>::B, 0);    // causes the error above
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-   = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
-

src/test/ui/borrowck/issue-81899.rs

@@ -2,8 +2,7 @@
 // The `panic!()` below is important to trigger the fixed ICE.
 
 const _CONST: &[u8] = &f(&[], |_| {});
-//~^ ERROR any use of this value
-//~| WARNING this was previously
+//~^ ERROR constant
 
 const fn f<F>(_: &[u8], _: F) -> &[u8]
 where

src/test/ui/borrowck/issue-81899.stderr

@@ -1,5 +1,5 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/issue-81899.rs:12:5
+  --> $DIR/issue-81899.rs:11:5
    |
 LL | const _CONST: &[u8] = &f(&[], |_| {});
    |                        -------------- inside `_CONST` at $DIR/issue-81899.rs:4:24
@@ -7,32 +7,17 @@ LL | const _CONST: &[u8] = &f(&[], |_| {});
 LL |     panic!()
    |     ^^^^^^^^
    |     |
-   |     the evaluated program panicked at 'explicit panic', $DIR/issue-81899.rs:12:5
+   |     the evaluated program panicked at 'explicit panic', $DIR/issue-81899.rs:11:5
    |     inside `f::<[closure@$DIR/issue-81899.rs:4:31: 4:34]>` at $SRC_DIR/std/src/panic.rs:LL:COL
    |
    = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/issue-81899.rs:4:23
    |
 LL | const _CONST: &[u8] = &f(&[], |_| {});
-   | -------------------   ^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
+   |                       ^^^^^^^^^^^^^^^ referenced constant has errors
 
 error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/issue-81899.rs:4:23
-   |
-LL | const _CONST: &[u8] = &f(&[], |_| {});
-   | -------------------   ^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-

src/test/ui/borrowck/issue-88434-minimal-example.rs

@@ -1,8 +1,7 @@
 // Regression test related to issue 88434
 
 const _CONST: &() = &f(&|_| {});
-//~^ ERROR any use of this value
-//~| WARNING this was previously
+//~^ ERROR constant
 
 const fn f<F>(_: &F)
 where

src/test/ui/borrowck/issue-88434-minimal-example.stderr

@@ -1,5 +1,5 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/issue-88434-minimal-example.rs:11:5
+  --> $DIR/issue-88434-minimal-example.rs:10:5
    |
 LL | const _CONST: &() = &f(&|_| {});
    |                      ---------- inside `_CONST` at $DIR/issue-88434-minimal-example.rs:3:22
@@ -7,32 +7,17 @@ LL | const _CONST: &() = &f(&|_| {});
 LL |     panic!()
    |     ^^^^^^^^
    |     |
-   |     the evaluated program panicked at 'explicit panic', $DIR/issue-88434-minimal-example.rs:11:5
+   |     the evaluated program panicked at 'explicit panic', $DIR/issue-88434-minimal-example.rs:10:5
    |     inside `f::<[closure@$DIR/issue-88434-minimal-example.rs:3:25: 3:28]>` at $SRC_DIR/std/src/panic.rs:LL:COL
    |
    = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/issue-88434-minimal-example.rs:3:21
    |
 LL | const _CONST: &() = &f(&|_| {});
-   | -----------------   ^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
+   |                     ^^^^^^^^^^^ referenced constant has errors
 
 error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/issue-88434-minimal-example.rs:3:21
-   |
-LL | const _CONST: &() = &f(&|_| {});
-   | -----------------   ^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-

src/test/ui/borrowck/issue-88434-removal-index-should-be-less.rs

@@ -1,8 +1,7 @@
 // Regression test for issue 88434
 
 const _CONST: &[u8] = &f(&[], |_| {});
-//~^ ERROR any use of this value will cause an error
-//~| WARNING this was previously
+//~^ ERROR constant
 
 const fn f<F>(_: &[u8], _: F) -> &[u8]
 where

src/test/ui/borrowck/issue-88434-removal-index-should-be-less.stderr

@@ -1,5 +1,5 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/issue-88434-removal-index-should-be-less.rs:11:5
+  --> $DIR/issue-88434-removal-index-should-be-less.rs:10:5
    |
 LL | const _CONST: &[u8] = &f(&[], |_| {});
    |                        -------------- inside `_CONST` at $DIR/issue-88434-removal-index-should-be-less.rs:3:24
@@ -7,32 +7,17 @@ LL | const _CONST: &[u8] = &f(&[], |_| {});
 LL |     panic!()
    |     ^^^^^^^^
    |     |
-   |     the evaluated program panicked at 'explicit panic', $DIR/issue-88434-removal-index-should-be-less.rs:11:5
+   |     the evaluated program panicked at 'explicit panic', $DIR/issue-88434-removal-index-should-be-less.rs:10:5
    |     inside `f::<[closure@$DIR/issue-88434-removal-index-should-be-less.rs:3:31: 3:34]>` at $SRC_DIR/std/src/panic.rs:LL:COL
    |
    = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/issue-88434-removal-index-should-be-less.rs:3:23
    |
 LL | const _CONST: &[u8] = &f(&[], |_| {});
-   | -------------------   ^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
+   |                       ^^^^^^^^^^^^^^^ referenced constant has errors
 
 error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/issue-88434-removal-index-should-be-less.rs:3:23
-   |
-LL | const _CONST: &[u8] = &f(&[], |_| {});
-   | -------------------   ^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-

src/test/ui/cast/cast-rfc0401.rs

@@ -159,11 +159,7 @@ fn main()
     assert!(foo as usize != bar as usize);
 
     // Taking a few bits of a function's address is totally pointless and we detect that
-    // Disabling the lint to ensure that the assertion can still be run
-    #[allow(const_err)]
-    {
-        assert_eq!(foo as i16, foo as usize as i16);
-    }
+    assert_eq!(foo as i16, foo as usize as i16);
 
     // fptr-ptr-cast
 

src/test/ui/closures/closure_promotion.rs

@@ -1,7 +1,5 @@
 // build-pass (FIXME(62277): could be check-pass?)
 
-#![allow(const_err)]
-
 fn main() {
     let x: &'static _ = &|| { let z = 3; z };
 }

src/test/ui/consts/array-literal-index-oob.rs

@@ -1,7 +1,7 @@
 // build-pass
 // ignore-pass (test emits codegen-time warnings and verifies that they are not errors)
 
-#![warn(const_err, unconditional_panic)]
+#![warn(unconditional_panic)]
 
 fn main() {
     &{ [1, 2, 3][4] };

src/test/ui/consts/array-literal-index-oob.stderr

@@ -5,10 +5,10 @@ LL |     &{ [1, 2, 3][4] };
    |        ^^^^^^^^^^^^ index out of bounds: the length is 3 but the index is 4
    |
 note: the lint level is defined here
-  --> $DIR/array-literal-index-oob.rs:4:20
+  --> $DIR/array-literal-index-oob.rs:4:9
    |
-LL | #![warn(const_err, unconditional_panic)]
-   |                    ^^^^^^^^^^^^^^^^^^^
+LL | #![warn(unconditional_panic)]
+   |         ^^^^^^^^^^^^^^^^^^^
 
 warning: 1 warning emitted
 

src/test/ui/consts/assert-type-intrinsics.rs

@@ -1,5 +1,3 @@
-// error-pattern: any use of this value will cause an error
-
 #![feature(never_type)]
 #![feature(const_assert_type2)]
 #![feature(core_intrinsics)]
@@ -11,15 +9,15 @@ fn main() {
     use std::mem::MaybeUninit;
 
     const _BAD1: () = unsafe {
-        intrinsics::assert_inhabited::<!>(); //~ERROR: any use of this value will cause an error
-        //~^WARN: previously accepted
+        MaybeUninit::<!>::uninit().assume_init();
+        //~^ERROR: evaluation of constant value failed
     };
     const _BAD2: () = {
-        intrinsics::assert_uninit_valid::<!>(); //~ERROR: any use of this value will cause an error
-        //~^WARN: previously accepted
+        intrinsics::assert_uninit_valid::<&'static i32>();
+        //~^ERROR: evaluation of constant value failed
     };
     const _BAD3: () = {
-        intrinsics::assert_zero_valid::<&'static i32>(); //~ERROR: any use of this value will cause an error
-        //~^WARN: previously accepted
+        intrinsics::assert_zero_valid::<&'static i32>();
+        //~^ERROR: evaluation of constant value failed
     };
 }

src/test/ui/consts/assert-type-intrinsics.stderr

@@ -1,75 +1,21 @@
-error: any use of this value will cause an error
-  --> $DIR/assert-type-intrinsics.rs:14:9
+error[E0080]: evaluation of constant value failed
+  --> $DIR/assert-type-intrinsics.rs:12:9
    |
-LL |     const _BAD1: () = unsafe {
-   |     ---------------
-LL |         intrinsics::assert_inhabited::<!>();
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ aborted execution: attempted to instantiate uninhabited type `!`
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
+LL |         MaybeUninit::<!>::uninit().assume_init();
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ aborted execution: attempted to instantiate uninhabited type `!`
 
-error: any use of this value will cause an error
-  --> $DIR/assert-type-intrinsics.rs:18:9
+error[E0080]: evaluation of constant value failed
+  --> $DIR/assert-type-intrinsics.rs:16:9
    |
-LL |     const _BAD2: () = {
-   |     ---------------
-LL |         intrinsics::assert_uninit_valid::<!>();
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ aborted execution: attempted to instantiate uninhabited type `!`
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+LL |         intrinsics::assert_uninit_valid::<&'static i32>();
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ aborted execution: attempted to leave type `&i32` uninitialized, which is invalid
 
-error: any use of this value will cause an error
-  --> $DIR/assert-type-intrinsics.rs:22:9
+error[E0080]: evaluation of constant value failed
+  --> $DIR/assert-type-intrinsics.rs:20:9
    |
-LL |     const _BAD3: () = {
-   |     ---------------
 LL |         intrinsics::assert_zero_valid::<&'static i32>();
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ aborted execution: attempted to zero-initialize type `&i32`, which is invalid
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
 error: aborting due to 3 previous errors
 
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/assert-type-intrinsics.rs:14:9
-   |
-LL |     const _BAD1: () = unsafe {
-   |     ---------------
-LL |         intrinsics::assert_inhabited::<!>();
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ aborted execution: attempted to instantiate uninhabited type `!`
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/assert-type-intrinsics.rs:18:9
-   |
-LL |     const _BAD2: () = {
-   |     ---------------
-LL |         intrinsics::assert_uninit_valid::<!>();
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ aborted execution: attempted to instantiate uninhabited type `!`
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/assert-type-intrinsics.rs:22:9
-   |
-LL |     const _BAD3: () = {
-   |     ---------------
-LL |         intrinsics::assert_zero_valid::<&'static i32>();
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ aborted execution: attempted to zero-initialize type `&i32`, which is invalid
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/assoc_const_generic_impl.rs

@@ -1,17 +1,14 @@
 // build-fail
 
-#![warn(const_err)]
-
 trait ZeroSized: Sized {
     const I_AM_ZERO_SIZED: ();
     fn requires_zero_size(self);
 }
 
 impl<T: Sized> ZeroSized for T {
-    const I_AM_ZERO_SIZED: ()  = [()][std::mem::size_of::<Self>()]; //~ WARN any use of this value
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    const I_AM_ZERO_SIZED: ()  = [()][std::mem::size_of::<Self>()]; //~ ERROR evaluation of `<u32 as ZeroSized>::I_AM_ZERO_SIZED` failed
     fn requires_zero_size(self) {
-        let () = Self::I_AM_ZERO_SIZED; //~ ERROR erroneous constant encountered
+        let () = Self::I_AM_ZERO_SIZED;
         println!("requires_zero_size called");
     }
 }

src/test/ui/consts/assoc_const_generic_impl.stderr

@@ -1,37 +1,15 @@
-warning: any use of this value will cause an error
-  --> $DIR/assoc_const_generic_impl.rs:11:34
+error[E0080]: evaluation of `<u32 as ZeroSized>::I_AM_ZERO_SIZED` failed
+  --> $DIR/assoc_const_generic_impl.rs:9:34
    |
 LL |     const I_AM_ZERO_SIZED: ()  = [()][std::mem::size_of::<Self>()];
-   |     -------------------------    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ index out of bounds: the length is 1 but the index is 4
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/assoc_const_generic_impl.rs:3:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
+   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ index out of bounds: the length is 1 but the index is 4
 
-error: erroneous constant encountered
-  --> $DIR/assoc_const_generic_impl.rs:14:18
+note: the above error was encountered while instantiating `fn <u32 as ZeroSized>::requires_zero_size`
+  --> $DIR/assoc_const_generic_impl.rs:18:5
    |
-LL |         let () = Self::I_AM_ZERO_SIZED;
-   |                  ^^^^^^^^^^^^^^^^^^^^^
+LL |     42_u32.requires_zero_size();
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to previous error; 1 warning emitted
-
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/assoc_const_generic_impl.rs:11:34
-   |
-LL |     const I_AM_ZERO_SIZED: ()  = [()][std::mem::size_of::<Self>()];
-   |     -------------------------    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ index out of bounds: the length is 1 but the index is 4
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/assoc_const_generic_impl.rs:3:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
+error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-err-early.rs

@@ -1,15 +1,8 @@
-#![deny(const_err)]
-
-pub const A: i8 = -i8::MIN; //~ ERROR const_err
-//~| WARN this was previously accepted by the compiler but is being phased out
-pub const B: u8 = 200u8 + 200u8; //~ ERROR const_err
-//~| WARN this was previously accepted by the compiler but is being phased out
-pub const C: u8 = 200u8 * 4; //~ ERROR const_err
-//~| WARN this was previously accepted by the compiler but is being phased out
-pub const D: u8 = 42u8 - (42u8 + 1); //~ ERROR const_err
-//~| WARN this was previously accepted by the compiler but is being phased out
-pub const E: u8 = [5u8][1]; //~ ERROR const_err
-//~| WARN this was previously accepted by the compiler but is being phased out
+pub const A: i8 = -i8::MIN; //~ ERROR constant
+pub const B: u8 = 200u8 + 200u8; //~ ERROR constant
+pub const C: u8 = 200u8 * 4; //~ ERROR constant
+pub const D: u8 = 42u8 - (42u8 + 1); //~ ERROR constant
+pub const E: u8 = [5u8][1]; //~ ERROR constant
 
 fn main() {
     let _a = A;

src/test/ui/consts/const-err-early.stderr

@@ -1,127 +1,33 @@
-error: any use of this value will cause an error
-  --> $DIR/const-err-early.rs:3:19
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-err-early.rs:1:19
    |
 LL | pub const A: i8 = -i8::MIN;
-   | ---------------   ^^^^^^^^ attempt to negate `i8::MIN`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err-early.rs:1:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
+   |                   ^^^^^^^^ attempt to negate `i8::MIN`, which would overflow
 
-error: any use of this value will cause an error
-  --> $DIR/const-err-early.rs:5:19
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-err-early.rs:2:19
    |
 LL | pub const B: u8 = 200u8 + 200u8;
-   | ---------------   ^^^^^^^^^^^^^ attempt to compute `200_u8 + 200_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                   ^^^^^^^^^^^^^ attempt to compute `200_u8 + 200_u8`, which would overflow
 
-error: any use of this value will cause an error
-  --> $DIR/const-err-early.rs:7:19
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-err-early.rs:3:19
    |
 LL | pub const C: u8 = 200u8 * 4;
-   | ---------------   ^^^^^^^^^ attempt to compute `200_u8 * 4_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                   ^^^^^^^^^ attempt to compute `200_u8 * 4_u8`, which would overflow
 
-error: any use of this value will cause an error
-  --> $DIR/const-err-early.rs:9:19
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-err-early.rs:4:19
    |
 LL | pub const D: u8 = 42u8 - (42u8 + 1);
-   | ---------------   ^^^^^^^^^^^^^^^^^ attempt to compute `42_u8 - 43_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                   ^^^^^^^^^^^^^^^^^ attempt to compute `42_u8 - 43_u8`, which would overflow
 
-error: any use of this value will cause an error
-  --> $DIR/const-err-early.rs:11:19
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-err-early.rs:5:19
    |
 LL | pub const E: u8 = [5u8][1];
-   | ---------------   ^^^^^^^^ index out of bounds: the length is 1 but the index is 1
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                   ^^^^^^^^ index out of bounds: the length is 1 but the index is 1
 
 error: aborting due to 5 previous errors
 
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-err-early.rs:3:19
-   |
-LL | pub const A: i8 = -i8::MIN;
-   | ---------------   ^^^^^^^^ attempt to negate `i8::MIN`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err-early.rs:1:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-err-early.rs:5:19
-   |
-LL | pub const B: u8 = 200u8 + 200u8;
-   | ---------------   ^^^^^^^^^^^^^ attempt to compute `200_u8 + 200_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err-early.rs:1:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-err-early.rs:7:19
-   |
-LL | pub const C: u8 = 200u8 * 4;
-   | ---------------   ^^^^^^^^^ attempt to compute `200_u8 * 4_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err-early.rs:1:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-err-early.rs:9:19
-   |
-LL | pub const D: u8 = 42u8 - (42u8 + 1);
-   | ---------------   ^^^^^^^^^^^^^^^^^ attempt to compute `42_u8 - 43_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err-early.rs:1:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-err-early.rs:11:19
-   |
-LL | pub const E: u8 = [5u8][1];
-   | ---------------   ^^^^^^^^ index out of bounds: the length is 1 but the index is 1
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err-early.rs:1:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-err-late.rs

@@ -0,0 +1,22 @@
+// build-fail
+// compile-flags: -C overflow-checks=on
+
+#![allow(arithmetic_overflow, unconditional_panic)]
+
+fn black_box<T>(_: T) {
+    unimplemented!()
+}
+
+struct S<T>(T);
+
+impl<T> S<T> {
+    const FOO: u8 = [5u8][1];
+    //~^ ERROR evaluation of `S::<i32>::FOO` failed
+    //~| ERROR evaluation of `S::<u32>::FOO` failed
+}
+
+fn main() {
+    black_box((S::<i32>::FOO, S::<u32>::FOO));
+    //~^ ERROR erroneous constant
+    //~| ERROR erroneous constant
+}

src/test/ui/consts/const-err-late.stderr

@@ -0,0 +1,27 @@
+error[E0080]: evaluation of `S::<i32>::FOO` failed
+  --> $DIR/const-err-late.rs:13:21
+   |
+LL |     const FOO: u8 = [5u8][1];
+   |                     ^^^^^^^^ index out of bounds: the length is 1 but the index is 1
+
+error[E0080]: erroneous constant used
+  --> $DIR/const-err-late.rs:19:16
+   |
+LL |     black_box((S::<i32>::FOO, S::<u32>::FOO));
+   |                ^^^^^^^^^^^^^ referenced constant has errors
+
+error[E0080]: evaluation of `S::<u32>::FOO` failed
+  --> $DIR/const-err-late.rs:13:21
+   |
+LL |     const FOO: u8 = [5u8][1];
+   |                     ^^^^^^^^ index out of bounds: the length is 1 but the index is 1
+
+error[E0080]: erroneous constant used
+  --> $DIR/const-err-late.rs:19:31
+   |
+LL |     black_box((S::<i32>::FOO, S::<u32>::FOO));
+   |                               ^^^^^^^^^^^^^ referenced constant has errors
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-err-multi.rs

@@ -1,17 +1,11 @@
-#![deny(const_err)]
-
 pub const A: i8 = -i8::MIN;
-//~^ ERROR const_err
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR constant
 pub const B: i8 = A;
-//~^ ERROR const_err
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR constant
 pub const C: u8 = A as u8;
-//~^ ERROR const_err
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR constant
 pub const D: i8 = 50 - A;
-//~^ ERROR const_err
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR constant
 
 fn main() {
     let _ = (A, B, C, D);

src/test/ui/consts/const-err-multi.stderr

@@ -1,103 +1,27 @@
-error: any use of this value will cause an error
-  --> $DIR/const-err-multi.rs:3:19
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-err-multi.rs:1:19
    |
 LL | pub const A: i8 = -i8::MIN;
-   | ---------------   ^^^^^^^^ attempt to negate `i8::MIN`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err-multi.rs:1:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
+   |                   ^^^^^^^^ attempt to negate `i8::MIN`, which would overflow
 
-error: any use of this value will cause an error
-  --> $DIR/const-err-multi.rs:6:19
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-err-multi.rs:3:19
    |
 LL | pub const B: i8 = A;
-   | ---------------   ^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                   ^ referenced constant has errors
 
-error: any use of this value will cause an error
-  --> $DIR/const-err-multi.rs:9:19
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-err-multi.rs:5:19
    |
 LL | pub const C: u8 = A as u8;
-   | ---------------   ^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                   ^ referenced constant has errors
 
-error: any use of this value will cause an error
-  --> $DIR/const-err-multi.rs:12:24
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-err-multi.rs:7:24
    |
 LL | pub const D: i8 = 50 - A;
-   | ---------------        ^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                        ^ referenced constant has errors
 
 error: aborting due to 4 previous errors
 
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-err-multi.rs:3:19
-   |
-LL | pub const A: i8 = -i8::MIN;
-   | ---------------   ^^^^^^^^ attempt to negate `i8::MIN`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err-multi.rs:1:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-err-multi.rs:6:19
-   |
-LL | pub const B: i8 = A;
-   | ---------------   ^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err-multi.rs:1:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-err-multi.rs:9:19
-   |
-LL | pub const C: u8 = A as u8;
-   | ---------------   ^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err-multi.rs:1:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-err-multi.rs:12:24
-   |
-LL | pub const D: i8 = 50 - A;
-   | ---------------        ^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err-multi.rs:1:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-err-rpass.rs

@@ -2,8 +2,6 @@
 #![allow(dead_code)]
 // check for const_err regressions
 
-#![deny(const_err)]
-
 const X: *const u8 = b"" as _;
 const Y: bool = 'A' == 'B';
 const Z: char = 'A';

src/test/ui/consts/const-err.rs

@@ -1,19 +0,0 @@
-// build-fail
-// compile-flags: -C overflow-checks=on
-
-#![allow(arithmetic_overflow)]
-#![warn(const_err)]
-
-fn black_box<T>(_: T) {
-    unimplemented!()
-}
-
-const FOO: u8 = [5u8][1];
-//~^ WARN any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
-
-fn main() {
-    black_box((FOO, FOO));
-    //~^ ERROR erroneous constant used
-    //~| ERROR erroneous constant
-}

src/test/ui/consts/const-err.stderr

@@ -1,44 +0,0 @@
-warning: any use of this value will cause an error
-  --> $DIR/const-err.rs:11:17
-   |
-LL | const FOO: u8 = [5u8][1];
-   | -------------   ^^^^^^^^ index out of bounds: the length is 1 but the index is 1
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err.rs:5:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-
-error[E0080]: erroneous constant used
-  --> $DIR/const-err.rs:16:16
-   |
-LL |     black_box((FOO, FOO));
-   |                ^^^ referenced constant has errors
-
-error[E0080]: erroneous constant used
-  --> $DIR/const-err.rs:16:21
-   |
-LL |     black_box((FOO, FOO));
-   |                     ^^^ referenced constant has errors
-
-error: aborting due to 2 previous errors; 1 warning emitted
-
-For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/const-err.rs:11:17
-   |
-LL | const FOO: u8 = [5u8][1];
-   | -------------   ^^^^^^^^ index out of bounds: the length is 1 but the index is 1
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-err.rs:5:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-

src/test/ui/consts/const-eval/conditional_array_execution.rs

@@ -1,16 +1,8 @@
-// build-fail
-
-#![warn(const_err)]
-
 const X: u32 = 5;
 const Y: u32 = 6;
 const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
-//~^ WARN any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR constant
 
 fn main() {
     println!("{}", FOO);
-    //~^ ERROR evaluation of constant value failed
-    //~| WARN erroneous constant used [const_err]
-    //~| WARN this was previously accepted by the compiler but is being phased out
 }

src/test/ui/consts/const-eval/conditional_array_execution.stderr

@@ -1,64 +1,9 @@
-warning: any use of this value will cause an error
-  --> $DIR/conditional_array_execution.rs:7:19
+error[E0080]: evaluation of constant value failed
+  --> $DIR/conditional_array_execution.rs:3:19
    |
 LL | const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
-   | --------------    ^^^^^ attempt to compute `5_u32 - 6_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/conditional_array_execution.rs:3:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
+   |                   ^^^^^ attempt to compute `5_u32 - 6_u32`, which would overflow
 
-error[E0080]: evaluation of constant value failed
-  --> $DIR/conditional_array_execution.rs:12:20
-   |
-LL |     println!("{}", FOO);
-   |                    ^^^ referenced constant has errors
-
-warning: erroneous constant used
-  --> $DIR/conditional_array_execution.rs:12:20
-   |
-LL |     println!("{}", FOO);
-   |                    ^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: this warning originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
-
-error: aborting due to previous error; 2 warnings emitted
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/conditional_array_execution.rs:7:19
-   |
-LL | const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
-   | --------------    ^^^^^ attempt to compute `5_u32 - 6_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/conditional_array_execution.rs:3:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-warning: erroneous constant used
-  --> $DIR/conditional_array_execution.rs:12:20
-   |
-LL |     println!("{}", FOO);
-   |                    ^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/conditional_array_execution.rs:3:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-   = note: this warning originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
-

src/test/ui/consts/const-eval/const-eval-overflow-2.rs

@@ -1,14 +1,14 @@
 // Evaluation of constants in refutable patterns goes through
 // different compiler control-flow paths.
 
-#![allow(unused_imports, warnings, const_err)]
+#![allow(unused_imports, warnings)]
 
 use std::fmt;
 use std::{i8, i16, i32, i64, isize};
 use std::{u8, u16, u32, u64, usize};
 
 const NEG_128: i8 = -128;
-const NEG_NEG_128: i8 = -NEG_128;
+const NEG_NEG_128: i8 = -NEG_128; //~ ERROR constant
 
 fn main() {
     match -128i8 {

src/test/ui/consts/const-eval/const-eval-overflow-2.stderr

@@ -1,29 +1,21 @@
-error: could not evaluate constant pattern
-  --> $DIR/const-eval-overflow-2.rs:15:9
-   |
-LL |         NEG_NEG_128 => println!("A"),
-   |         ^^^^^^^^^^^
-
-error: could not evaluate constant pattern
-  --> $DIR/const-eval-overflow-2.rs:15:9
-   |
-LL |         NEG_NEG_128 => println!("A"),
-   |         ^^^^^^^^^^^
-
-error: aborting due to 2 previous errors
-
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/const-eval-overflow-2.rs:11:25
    |
 LL | const NEG_NEG_128: i8 = -NEG_128;
-   | ---------------------   ^^^^^^^^ attempt to negate `i8::MIN`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow-2.rs:4:36
-   |
-LL | #![allow(unused_imports, warnings, const_err)]
-   |                                    ^^^^^^^^^
+   |                         ^^^^^^^^ attempt to negate `i8::MIN`, which would overflow
 
+error: could not evaluate constant pattern
+  --> $DIR/const-eval-overflow-2.rs:15:9
+   |
+LL |         NEG_NEG_128 => println!("A"),
+   |         ^^^^^^^^^^^
+
+error: could not evaluate constant pattern
+  --> $DIR/const-eval-overflow-2.rs:15:9
+   |
+LL |         NEG_NEG_128 => println!("A"),
+   |         ^^^^^^^^^^^
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-eval/const-eval-overflow2.rs

@@ -5,63 +5,53 @@
 // change this warn to a deny, then the compiler will exit before
 // those errors are detected.
 
-#![deny(const_err)]
-
 use std::fmt;
 
 const VALS_I8: (i8,) =
     (
      i8::MIN - 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_I16: (i16,) =
     (
      i16::MIN - 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_I32: (i32,) =
     (
      i32::MIN - 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_I64: (i64,) =
     (
      i64::MIN - 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_U8: (u8,) =
     (
      u8::MIN - 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_U16: (u16,) = (
      u16::MIN - 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_U32: (u32,) = (
      u32::MIN - 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_U64: (u64,) =
     (
      u64::MIN - 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 fn main() {
     foo(VALS_I8);

src/test/ui/consts/const-eval/const-eval-overflow2.stderr

@@ -1,243 +1,51 @@
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:14:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2.rs:12:6
    |
-LL | const VALS_I8: (i8,) =
-   | --------------------
-LL |     (
 LL |      i8::MIN - 1,
    |      ^^^^^^^^^^^ attempt to compute `i8::MIN - 1_i8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:21:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2.rs:18:6
    |
-LL | const VALS_I16: (i16,) =
-   | ----------------------
-LL |     (
 LL |      i16::MIN - 1,
    |      ^^^^^^^^^^^^ attempt to compute `i16::MIN - 1_i16`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:28:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2.rs:24:6
    |
-LL | const VALS_I32: (i32,) =
-   | ----------------------
-LL |     (
 LL |      i32::MIN - 1,
    |      ^^^^^^^^^^^^ attempt to compute `i32::MIN - 1_i32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:35:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2.rs:30:6
    |
-LL | const VALS_I64: (i64,) =
-   | ----------------------
-LL |     (
 LL |      i64::MIN - 1,
    |      ^^^^^^^^^^^^ attempt to compute `i64::MIN - 1_i64`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:42:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2.rs:36:6
    |
-LL | const VALS_U8: (u8,) =
-   | --------------------
-LL |     (
 LL |      u8::MIN - 1,
    |      ^^^^^^^^^^^ attempt to compute `0_u8 - 1_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:48:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2.rs:41:6
    |
-LL | const VALS_U16: (u16,) = (
-   | ----------------------
 LL |      u16::MIN - 1,
    |      ^^^^^^^^^^^^ attempt to compute `0_u16 - 1_u16`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:54:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2.rs:46:6
    |
-LL | const VALS_U32: (u32,) = (
-   | ----------------------
 LL |      u32::MIN - 1,
    |      ^^^^^^^^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:61:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2.rs:52:6
    |
-LL | const VALS_U64: (u64,) =
-   | ----------------------
-LL |     (
 LL |      u64::MIN - 1,
    |      ^^^^^^^^^^^^ attempt to compute `0_u64 - 1_u64`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
 error: aborting due to 8 previous errors
 
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:14:6
-   |
-LL | const VALS_I8: (i8,) =
-   | --------------------
-LL |     (
-LL |      i8::MIN - 1,
-   |      ^^^^^^^^^^^ attempt to compute `i8::MIN - 1_i8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:21:6
-   |
-LL | const VALS_I16: (i16,) =
-   | ----------------------
-LL |     (
-LL |      i16::MIN - 1,
-   |      ^^^^^^^^^^^^ attempt to compute `i16::MIN - 1_i16`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:28:6
-   |
-LL | const VALS_I32: (i32,) =
-   | ----------------------
-LL |     (
-LL |      i32::MIN - 1,
-   |      ^^^^^^^^^^^^ attempt to compute `i32::MIN - 1_i32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:35:6
-   |
-LL | const VALS_I64: (i64,) =
-   | ----------------------
-LL |     (
-LL |      i64::MIN - 1,
-   |      ^^^^^^^^^^^^ attempt to compute `i64::MIN - 1_i64`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:42:6
-   |
-LL | const VALS_U8: (u8,) =
-   | --------------------
-LL |     (
-LL |      u8::MIN - 1,
-   |      ^^^^^^^^^^^ attempt to compute `0_u8 - 1_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:48:6
-   |
-LL | const VALS_U16: (u16,) = (
-   | ----------------------
-LL |      u16::MIN - 1,
-   |      ^^^^^^^^^^^^ attempt to compute `0_u16 - 1_u16`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:54:6
-   |
-LL | const VALS_U32: (u32,) = (
-   | ----------------------
-LL |      u32::MIN - 1,
-   |      ^^^^^^^^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2.rs:61:6
-   |
-LL | const VALS_U64: (u64,) =
-   | ----------------------
-LL |     (
-LL |      u64::MIN - 1,
-   |      ^^^^^^^^^^^^ attempt to compute `0_u64 - 1_u64`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-eval/const-eval-overflow2b.rs

@@ -5,63 +5,53 @@
 // change this warn to a deny, then the compiler will exit before
 // those errors are detected.
 
-#![deny(const_err)]
-
 use std::fmt;
 
 const VALS_I8: (i8,) =
     (
      i8::MAX + 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_I16: (i16,) =
     (
      i16::MAX + 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_I32: (i32,) =
     (
      i32::MAX + 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_I64: (i64,) =
     (
      i64::MAX + 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_U8: (u8,) =
     (
      u8::MAX + 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_U16: (u16,) = (
      u16::MAX + 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_U32: (u32,) = (
      u32::MAX + 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_U64: (u64,) =
     (
      u64::MAX + 1,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 fn main() {
     foo(VALS_I8);

src/test/ui/consts/const-eval/const-eval-overflow2b.stderr

@@ -1,243 +1,51 @@
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:14:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2b.rs:12:6
    |
-LL | const VALS_I8: (i8,) =
-   | --------------------
-LL |     (
 LL |      i8::MAX + 1,
    |      ^^^^^^^^^^^ attempt to compute `i8::MAX + 1_i8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2b.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:21:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2b.rs:18:6
    |
-LL | const VALS_I16: (i16,) =
-   | ----------------------
-LL |     (
 LL |      i16::MAX + 1,
    |      ^^^^^^^^^^^^ attempt to compute `i16::MAX + 1_i16`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:28:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2b.rs:24:6
    |
-LL | const VALS_I32: (i32,) =
-   | ----------------------
-LL |     (
 LL |      i32::MAX + 1,
    |      ^^^^^^^^^^^^ attempt to compute `i32::MAX + 1_i32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:35:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2b.rs:30:6
    |
-LL | const VALS_I64: (i64,) =
-   | ----------------------
-LL |     (
 LL |      i64::MAX + 1,
    |      ^^^^^^^^^^^^ attempt to compute `i64::MAX + 1_i64`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:42:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2b.rs:36:6
    |
-LL | const VALS_U8: (u8,) =
-   | --------------------
-LL |     (
 LL |      u8::MAX + 1,
    |      ^^^^^^^^^^^ attempt to compute `u8::MAX + 1_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:48:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2b.rs:41:6
    |
-LL | const VALS_U16: (u16,) = (
-   | ----------------------
 LL |      u16::MAX + 1,
    |      ^^^^^^^^^^^^ attempt to compute `u16::MAX + 1_u16`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:54:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2b.rs:46:6
    |
-LL | const VALS_U32: (u32,) = (
-   | ----------------------
 LL |      u32::MAX + 1,
    |      ^^^^^^^^^^^^ attempt to compute `u32::MAX + 1_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:61:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2b.rs:52:6
    |
-LL | const VALS_U64: (u64,) =
-   | ----------------------
-LL |     (
 LL |      u64::MAX + 1,
    |      ^^^^^^^^^^^^ attempt to compute `u64::MAX + 1_u64`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
 error: aborting due to 8 previous errors
 
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:14:6
-   |
-LL | const VALS_I8: (i8,) =
-   | --------------------
-LL |     (
-LL |      i8::MAX + 1,
-   |      ^^^^^^^^^^^ attempt to compute `i8::MAX + 1_i8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2b.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:21:6
-   |
-LL | const VALS_I16: (i16,) =
-   | ----------------------
-LL |     (
-LL |      i16::MAX + 1,
-   |      ^^^^^^^^^^^^ attempt to compute `i16::MAX + 1_i16`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2b.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:28:6
-   |
-LL | const VALS_I32: (i32,) =
-   | ----------------------
-LL |     (
-LL |      i32::MAX + 1,
-   |      ^^^^^^^^^^^^ attempt to compute `i32::MAX + 1_i32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2b.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:35:6
-   |
-LL | const VALS_I64: (i64,) =
-   | ----------------------
-LL |     (
-LL |      i64::MAX + 1,
-   |      ^^^^^^^^^^^^ attempt to compute `i64::MAX + 1_i64`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2b.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:42:6
-   |
-LL | const VALS_U8: (u8,) =
-   | --------------------
-LL |     (
-LL |      u8::MAX + 1,
-   |      ^^^^^^^^^^^ attempt to compute `u8::MAX + 1_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2b.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:48:6
-   |
-LL | const VALS_U16: (u16,) = (
-   | ----------------------
-LL |      u16::MAX + 1,
-   |      ^^^^^^^^^^^^ attempt to compute `u16::MAX + 1_u16`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2b.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:54:6
-   |
-LL | const VALS_U32: (u32,) = (
-   | ----------------------
-LL |      u32::MAX + 1,
-   |      ^^^^^^^^^^^^ attempt to compute `u32::MAX + 1_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2b.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2b.rs:61:6
-   |
-LL | const VALS_U64: (u64,) =
-   | ----------------------
-LL |     (
-LL |      u64::MAX + 1,
-   |      ^^^^^^^^^^^^ attempt to compute `u64::MAX + 1_u64`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2b.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-eval/const-eval-overflow2c.rs

@@ -5,63 +5,53 @@
 // change this warn to a deny, then the compiler will exit before
 // those errors are detected.
 
-#![deny(const_err)]
-
 use std::fmt;
 
 const VALS_I8: (i8,) =
     (
      i8::MIN * 2,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_I16: (i16,) =
     (
      i16::MIN * 2,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_I32: (i32,) =
     (
      i32::MIN * 2,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_I64: (i64,) =
     (
      i64::MIN * 2,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_U8: (u8,) =
     (
      u8::MAX * 2,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_U16: (u16,) = (
      u16::MAX * 2,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_U32: (u32,) = (
      u32::MAX * 2,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 const VALS_U64: (u64,) =
     (
      u64::MAX * 2,
      );
- //~^^ ERROR any use of this value will cause an error
- //~| WARN this was previously accepted by the compiler but is being phased out
+ //~^^ ERROR evaluation of constant value failed
 
 fn main() {
     foo(VALS_I8);

src/test/ui/consts/const-eval/const-eval-overflow2c.stderr

@@ -1,243 +1,51 @@
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:14:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2c.rs:12:6
    |
-LL | const VALS_I8: (i8,) =
-   | --------------------
-LL |     (
 LL |      i8::MIN * 2,
    |      ^^^^^^^^^^^ attempt to compute `i8::MIN * 2_i8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2c.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:21:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2c.rs:18:6
    |
-LL | const VALS_I16: (i16,) =
-   | ----------------------
-LL |     (
 LL |      i16::MIN * 2,
    |      ^^^^^^^^^^^^ attempt to compute `i16::MIN * 2_i16`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:28:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2c.rs:24:6
    |
-LL | const VALS_I32: (i32,) =
-   | ----------------------
-LL |     (
 LL |      i32::MIN * 2,
    |      ^^^^^^^^^^^^ attempt to compute `i32::MIN * 2_i32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:35:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2c.rs:30:6
    |
-LL | const VALS_I64: (i64,) =
-   | ----------------------
-LL |     (
 LL |      i64::MIN * 2,
    |      ^^^^^^^^^^^^ attempt to compute `i64::MIN * 2_i64`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:42:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2c.rs:36:6
    |
-LL | const VALS_U8: (u8,) =
-   | --------------------
-LL |     (
 LL |      u8::MAX * 2,
    |      ^^^^^^^^^^^ attempt to compute `u8::MAX * 2_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:48:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2c.rs:41:6
    |
-LL | const VALS_U16: (u16,) = (
-   | ----------------------
 LL |      u16::MAX * 2,
    |      ^^^^^^^^^^^^ attempt to compute `u16::MAX * 2_u16`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:54:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2c.rs:46:6
    |
-LL | const VALS_U32: (u32,) = (
-   | ----------------------
 LL |      u32::MAX * 2,
    |      ^^^^^^^^^^^^ attempt to compute `u32::MAX * 2_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:61:6
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-overflow2c.rs:52:6
    |
-LL | const VALS_U64: (u64,) =
-   | ----------------------
-LL |     (
 LL |      u64::MAX * 2,
    |      ^^^^^^^^^^^^ attempt to compute `u64::MAX * 2_u64`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
 error: aborting due to 8 previous errors
 
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:14:6
-   |
-LL | const VALS_I8: (i8,) =
-   | --------------------
-LL |     (
-LL |      i8::MIN * 2,
-   |      ^^^^^^^^^^^ attempt to compute `i8::MIN * 2_i8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2c.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:21:6
-   |
-LL | const VALS_I16: (i16,) =
-   | ----------------------
-LL |     (
-LL |      i16::MIN * 2,
-   |      ^^^^^^^^^^^^ attempt to compute `i16::MIN * 2_i16`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2c.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:28:6
-   |
-LL | const VALS_I32: (i32,) =
-   | ----------------------
-LL |     (
-LL |      i32::MIN * 2,
-   |      ^^^^^^^^^^^^ attempt to compute `i32::MIN * 2_i32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2c.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:35:6
-   |
-LL | const VALS_I64: (i64,) =
-   | ----------------------
-LL |     (
-LL |      i64::MIN * 2,
-   |      ^^^^^^^^^^^^ attempt to compute `i64::MIN * 2_i64`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2c.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:42:6
-   |
-LL | const VALS_U8: (u8,) =
-   | --------------------
-LL |     (
-LL |      u8::MAX * 2,
-   |      ^^^^^^^^^^^ attempt to compute `u8::MAX * 2_u8`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2c.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:48:6
-   |
-LL | const VALS_U16: (u16,) = (
-   | ----------------------
-LL |      u16::MAX * 2,
-   |      ^^^^^^^^^^^^ attempt to compute `u16::MAX * 2_u16`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2c.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:54:6
-   |
-LL | const VALS_U32: (u32,) = (
-   | ----------------------
-LL |      u32::MAX * 2,
-   |      ^^^^^^^^^^^^ attempt to compute `u32::MAX * 2_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2c.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-eval-overflow2c.rs:61:6
-   |
-LL | const VALS_U64: (u64,) =
-   | ----------------------
-LL |     (
-LL |      u64::MAX * 2,
-   |      ^^^^^^^^^^^^ attempt to compute `u64::MAX * 2_u64`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-overflow2c.rs:8:9
-   |
-LL | #![deny(const_err)]
-   |         ^^^^^^^^^
-
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-eval/const-eval-query-stack.rs

@@ -1,5 +1,4 @@
-// compile-flags: -Ztreat-err-as-bug=2
-// build-fail
+// compile-flags: -Ztreat-err-as-bug=1
 // failure-status: 101
 // rustc-env:RUST_BACKTRACE=1
 // normalize-stderr-test "\nerror: internal compiler error.*\n\n" -> ""
@@ -15,14 +14,9 @@
 
 #![allow(unconditional_panic)]
 
-#[warn(const_err)]
-const X: i32 = 1 / 0; //~WARN any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+const X: i32 = 1 / 0; //~ERROR constant
 
 fn main() {
     let x: &'static i32 = &X;
-    //~^ ERROR evaluation of constant value failed
-    //~| ERROR erroneous constant used
-    //~| WARNING this was previously accepted by the compiler
     println!("x={}", x);
 }

src/test/ui/consts/const-eval/const-eval-query-stack.stderr

@@ -1,61 +1,13 @@
-warning: any use of this value will cause an error
-  --> $DIR/const-eval-query-stack.rs:19:16
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-eval-query-stack.rs:17:16
    |
 LL | const X: i32 = 1 / 0;
-   | ------------   ^^^^^ attempt to divide `1_i32` by zero
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-query-stack.rs:18:8
-   |
-LL | #[warn(const_err)]
-   |        ^^^^^^^^^
-
-error[E0080]: evaluation of constant value failed
-  --> $DIR/const-eval-query-stack.rs:23:28
-   |
-LL |     let x: &'static i32 = &X;
-   |                            ^ referenced constant has errors
-
-error: erroneous constant used
-  --> $DIR/const-eval-query-stack.rs:23:27
-   |
-LL |     let x: &'static i32 = &X;
-   |                           ^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
+   |                ^^^^^ attempt to divide `1_i32` by zero
 
 query stack during panic:
-#0 [mir_drops_elaborated_and_const_checked] elaborating drops for `main`
-#1 [optimized_mir] optimizing MIR for `main`
-#2 [collect_and_partition_mono_items] collect_and_partition_mono_items
+#0 [eval_to_allocation_raw] const-evaluating + checking `X`
+#1 [eval_to_const_value_raw] simplifying constant for the type system `X`
+#2 [eval_to_const_value_raw] simplifying constant for the type system `X`
+#3 [lint_mod] linting top-level module
+#4 [analysis] running analysis passes on this crate
 end of query stack
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/const-eval-query-stack.rs:19:16
-   |
-LL | const X: i32 = 1 / 0;
-   | ------------   ^^^^^ attempt to divide `1_i32` by zero
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const-eval-query-stack.rs:18:8
-   |
-LL | #[warn(const_err)]
-   |        ^^^^^^^^^
-
-Future breakage diagnostic:
-error: erroneous constant used
-  --> $DIR/const-eval-query-stack.rs:23:27
-   |
-LL |     let x: &'static i32 = &X;
-   |                           ^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-

src/test/ui/consts/const-eval/const-pointer-values-in-various-types.64bit.stderr

@@ -1,664 +1,258 @@
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/const-pointer-values-in-various-types.rs:26:49
    |
 LL |     const I32_REF_USIZE_UNION: usize = unsafe { Nonsense { int_32_ref: &3 }.u };
-   |     --------------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:30:43
-   |
-LL |     const I32_REF_U8_UNION: u8 = unsafe { Nonsense { int_32_ref: &3 }.uint_8 };
-   |     --------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:34:45
-   |
-LL |     const I32_REF_U16_UNION: u16 = unsafe { Nonsense { int_32_ref: &3 }.uint_16 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:38:45
-   |
-LL |     const I32_REF_U32_UNION: u32 = unsafe { Nonsense { int_32_ref: &3 }.uint_32 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:42:45
-   |
-LL |     const I32_REF_U64_UNION: u64 = unsafe { Nonsense { int_32_ref: &3 }.uint_64 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/const-pointer-values-in-various-types.rs:46:47
+  --> $DIR/const-pointer-values-in-various-types.rs:29:43
+   |
+LL |     const I32_REF_U8_UNION: u8 = unsafe { Nonsense { int_32_ref: &3 }.uint_8 };
+   |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:32:45
+   |
+LL |     const I32_REF_U16_UNION: u16 = unsafe { Nonsense { int_32_ref: &3 }.uint_16 };
+   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:35:45
+   |
+LL |     const I32_REF_U32_UNION: u32 = unsafe { Nonsense { int_32_ref: &3 }.uint_32 };
+   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:38:45
+   |
+LL |     const I32_REF_U64_UNION: u64 = unsafe { Nonsense { int_32_ref: &3 }.uint_64 };
+   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:41:47
    |
 LL |     const I32_REF_U128_UNION: u128 = unsafe { Nonsense { int_32_ref: &3 }.uint_128 };
    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:50:43
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:45:43
    |
 LL |     const I32_REF_I8_UNION: i8 = unsafe { Nonsense { int_32_ref: &3 }.int_8 };
-   |     --------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:54:45
-   |
-LL |     const I32_REF_I16_UNION: i16 = unsafe { Nonsense { int_32_ref: &3 }.int_16 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:58:45
-   |
-LL |     const I32_REF_I32_UNION: i32 = unsafe { Nonsense { int_32_ref: &3 }.int_32 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:62:45
-   |
-LL |     const I32_REF_I64_UNION: i64 = unsafe { Nonsense { int_32_ref: &3 }.int_64 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/const-pointer-values-in-various-types.rs:66:47
+  --> $DIR/const-pointer-values-in-various-types.rs:48:45
+   |
+LL |     const I32_REF_I16_UNION: i16 = unsafe { Nonsense { int_32_ref: &3 }.int_16 };
+   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:51:45
+   |
+LL |     const I32_REF_I32_UNION: i32 = unsafe { Nonsense { int_32_ref: &3 }.int_32 };
+   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:54:45
+   |
+LL |     const I32_REF_I64_UNION: i64 = unsafe { Nonsense { int_32_ref: &3 }.int_64 };
+   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:57:47
    |
 LL |     const I32_REF_I128_UNION: i128 = unsafe { Nonsense { int_32_ref: &3 }.int_128 };
    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:70:45
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:61:45
    |
 LL |     const I32_REF_F32_UNION: f32 = unsafe { Nonsense { int_32_ref: &3 }.float_32 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:74:45
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:64:45
    |
 LL |     const I32_REF_F64_UNION: f64 = unsafe { Nonsense { int_32_ref: &3 }.float_64 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:78:47
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:67:47
    |
 LL |     const I32_REF_BOOL_UNION: bool = unsafe { Nonsense { int_32_ref: &3 }.truthy_falsey };
-   |     ------------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:82:47
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:70:47
    |
 LL |     const I32_REF_CHAR_UNION: char = unsafe { Nonsense { int_32_ref: &3 }.character };
-   |     ------------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:86:39
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:73:39
    |
 LL |     const STR_U8_UNION: u8 = unsafe { Nonsense { stringy: "3" }.uint_8 };
-   |     ----------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:90:41
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:76:41
    |
 LL |     const STR_U16_UNION: u16 = unsafe { Nonsense { stringy: "3" }.uint_16 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:94:41
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:79:41
    |
 LL |     const STR_U32_UNION: u32 = unsafe { Nonsense { stringy: "3" }.uint_32 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:98:41
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:82:41
    |
 LL |     const STR_U64_UNION: u64 = unsafe { Nonsense { stringy: "3" }.uint_64 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:102:43
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:85:43
    |
 LL |     const STR_U128_UNION: u128 = unsafe { Nonsense { stringy: "3" }.uint_128 };
-   |     --------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:106:39
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:88:39
    |
 LL |     const STR_I8_UNION: i8 = unsafe { Nonsense { stringy: "3" }.int_8 };
-   |     ----------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:110:41
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:91:41
    |
 LL |     const STR_I16_UNION: i16 = unsafe { Nonsense { stringy: "3" }.int_16 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:114:41
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:94:41
    |
 LL |     const STR_I32_UNION: i32 = unsafe { Nonsense { stringy: "3" }.int_32 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:118:41
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:97:41
    |
 LL |     const STR_I64_UNION: i64 = unsafe { Nonsense { stringy: "3" }.int_64 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:122:43
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:100:43
    |
 LL |     const STR_I128_UNION: i128 = unsafe { Nonsense { stringy: "3" }.int_128 };
-   |     --------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:126:41
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:103:41
    |
 LL |     const STR_F32_UNION: f32 = unsafe { Nonsense { stringy: "3" }.float_32 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:130:41
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:106:41
    |
 LL |     const STR_F64_UNION: f64 = unsafe { Nonsense { stringy: "3" }.float_64 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:134:43
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:109:43
    |
 LL |     const STR_BOOL_UNION: bool = unsafe { Nonsense { stringy: "3" }.truthy_falsey };
-   |     --------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:138:43
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const-pointer-values-in-various-types.rs:112:43
    |
 LL |     const STR_CHAR_UNION: char = unsafe { Nonsense { stringy: "3" }.character };
-   |     --------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error: aborting due to 29 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:26:49
-   |
-LL |     const I32_REF_USIZE_UNION: usize = unsafe { Nonsense { int_32_ref: &3 }.u };
-   |     --------------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:30:43
-   |
-LL |     const I32_REF_U8_UNION: u8 = unsafe { Nonsense { int_32_ref: &3 }.uint_8 };
-   |     --------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:34:45
-   |
-LL |     const I32_REF_U16_UNION: u16 = unsafe { Nonsense { int_32_ref: &3 }.uint_16 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:38:45
-   |
-LL |     const I32_REF_U32_UNION: u32 = unsafe { Nonsense { int_32_ref: &3 }.uint_32 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:42:45
-   |
-LL |     const I32_REF_U64_UNION: u64 = unsafe { Nonsense { int_32_ref: &3 }.uint_64 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:50:43
-   |
-LL |     const I32_REF_I8_UNION: i8 = unsafe { Nonsense { int_32_ref: &3 }.int_8 };
-   |     --------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:54:45
-   |
-LL |     const I32_REF_I16_UNION: i16 = unsafe { Nonsense { int_32_ref: &3 }.int_16 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:58:45
-   |
-LL |     const I32_REF_I32_UNION: i32 = unsafe { Nonsense { int_32_ref: &3 }.int_32 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:62:45
-   |
-LL |     const I32_REF_I64_UNION: i64 = unsafe { Nonsense { int_32_ref: &3 }.int_64 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:70:45
-   |
-LL |     const I32_REF_F32_UNION: f32 = unsafe { Nonsense { int_32_ref: &3 }.float_32 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:74:45
-   |
-LL |     const I32_REF_F64_UNION: f64 = unsafe { Nonsense { int_32_ref: &3 }.float_64 };
-   |     ----------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:78:47
-   |
-LL |     const I32_REF_BOOL_UNION: bool = unsafe { Nonsense { int_32_ref: &3 }.truthy_falsey };
-   |     ------------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:82:47
-   |
-LL |     const I32_REF_CHAR_UNION: char = unsafe { Nonsense { int_32_ref: &3 }.character };
-   |     ------------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:86:39
-   |
-LL |     const STR_U8_UNION: u8 = unsafe { Nonsense { stringy: "3" }.uint_8 };
-   |     ----------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:90:41
-   |
-LL |     const STR_U16_UNION: u16 = unsafe { Nonsense { stringy: "3" }.uint_16 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:94:41
-   |
-LL |     const STR_U32_UNION: u32 = unsafe { Nonsense { stringy: "3" }.uint_32 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:98:41
-   |
-LL |     const STR_U64_UNION: u64 = unsafe { Nonsense { stringy: "3" }.uint_64 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:102:43
-   |
-LL |     const STR_U128_UNION: u128 = unsafe { Nonsense { stringy: "3" }.uint_128 };
-   |     --------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:106:39
-   |
-LL |     const STR_I8_UNION: i8 = unsafe { Nonsense { stringy: "3" }.int_8 };
-   |     ----------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:110:41
-   |
-LL |     const STR_I16_UNION: i16 = unsafe { Nonsense { stringy: "3" }.int_16 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:114:41
-   |
-LL |     const STR_I32_UNION: i32 = unsafe { Nonsense { stringy: "3" }.int_32 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:118:41
-   |
-LL |     const STR_I64_UNION: i64 = unsafe { Nonsense { stringy: "3" }.int_64 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:122:43
-   |
-LL |     const STR_I128_UNION: i128 = unsafe { Nonsense { stringy: "3" }.int_128 };
-   |     --------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:126:41
-   |
-LL |     const STR_F32_UNION: f32 = unsafe { Nonsense { stringy: "3" }.float_32 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:130:41
-   |
-LL |     const STR_F64_UNION: f64 = unsafe { Nonsense { stringy: "3" }.float_64 };
-   |     ------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:134:43
-   |
-LL |     const STR_BOOL_UNION: bool = unsafe { Nonsense { stringy: "3" }.truthy_falsey };
-   |     --------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/const-pointer-values-in-various-types.rs:138:43
-   |
-LL |     const STR_CHAR_UNION: char = unsafe { Nonsense { stringy: "3" }.character };
-   |     --------------------------            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-

src/test/ui/consts/const-eval/const-pointer-values-in-various-types.rs

@@ -24,118 +24,91 @@ union Nonsense {
 
 fn main() {
     const I32_REF_USIZE_UNION: usize = unsafe { Nonsense { int_32_ref: &3 }.u };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const I32_REF_U8_UNION: u8 = unsafe { Nonsense { int_32_ref: &3 }.uint_8 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const I32_REF_U16_UNION: u16 = unsafe { Nonsense { int_32_ref: &3 }.uint_16 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const I32_REF_U32_UNION: u32 = unsafe { Nonsense { int_32_ref: &3 }.uint_32 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const I32_REF_U64_UNION: u64 = unsafe { Nonsense { int_32_ref: &3 }.uint_64 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const I32_REF_U128_UNION: u128 = unsafe { Nonsense { int_32_ref: &3 }.uint_128 };
     //~^ ERROR evaluation of constant value failed
     //~| uninitialized
 
     const I32_REF_I8_UNION: i8 = unsafe { Nonsense { int_32_ref: &3 }.int_8 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const I32_REF_I16_UNION: i16 = unsafe { Nonsense { int_32_ref: &3 }.int_16 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const I32_REF_I32_UNION: i32 = unsafe { Nonsense { int_32_ref: &3 }.int_32 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const I32_REF_I64_UNION: i64 = unsafe { Nonsense { int_32_ref: &3 }.int_64 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const I32_REF_I128_UNION: i128 = unsafe { Nonsense { int_32_ref: &3 }.int_128 };
     //~^ ERROR evaluation of constant value failed
     //~| uninitialized
 
     const I32_REF_F32_UNION: f32 = unsafe { Nonsense { int_32_ref: &3 }.float_32 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const I32_REF_F64_UNION: f64 = unsafe { Nonsense { int_32_ref: &3 }.float_64 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const I32_REF_BOOL_UNION: bool = unsafe { Nonsense { int_32_ref: &3 }.truthy_falsey };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const I32_REF_CHAR_UNION: char = unsafe { Nonsense { int_32_ref: &3 }.character };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_U8_UNION: u8 = unsafe { Nonsense { stringy: "3" }.uint_8 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_U16_UNION: u16 = unsafe { Nonsense { stringy: "3" }.uint_16 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_U32_UNION: u32 = unsafe { Nonsense { stringy: "3" }.uint_32 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_U64_UNION: u64 = unsafe { Nonsense { stringy: "3" }.uint_64 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_U128_UNION: u128 = unsafe { Nonsense { stringy: "3" }.uint_128 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_I8_UNION: i8 = unsafe { Nonsense { stringy: "3" }.int_8 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_I16_UNION: i16 = unsafe { Nonsense { stringy: "3" }.int_16 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_I32_UNION: i32 = unsafe { Nonsense { stringy: "3" }.int_32 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_I64_UNION: i64 = unsafe { Nonsense { stringy: "3" }.int_64 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_I128_UNION: i128 = unsafe { Nonsense { stringy: "3" }.int_128 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_F32_UNION: f32 = unsafe { Nonsense { stringy: "3" }.float_32 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_F64_UNION: f64 = unsafe { Nonsense { stringy: "3" }.float_64 };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_BOOL_UNION: bool = unsafe { Nonsense { stringy: "3" }.truthy_falsey };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 
     const STR_CHAR_UNION: char = unsafe { Nonsense { stringy: "3" }.character };
-    //~^ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of constant value failed
 }

src/test/ui/consts/const-eval/const_fn_ptr_fail2.rs

@@ -1,8 +1,5 @@
-// build-fail
 // compile-flags: -Zunleash-the-miri-inside-of-you
 
-#![allow(const_err)]
-
 fn double(x: usize) -> usize {
     x * 2
 }
@@ -10,6 +7,8 @@ const X: fn(usize) -> usize = double;
 
 const fn bar(x: fn(usize) -> usize, y: usize) -> usize {
     x(y)
+    //~^ ERROR evaluation of constant value failed
+    //~| ERROR evaluation of constant value failed
 }
 
 const Y: usize = bar(X, 2); // FIXME: should fail to typeck someday
@@ -17,7 +16,5 @@ const Z: usize = bar(double, 2); // FIXME: should fail to typeck someday
 
 fn main() {
     assert_eq!(Y, 4);
-    //~^ ERROR evaluation of constant value failed
     assert_eq!(Z, 4);
-    //~^ ERROR evaluation of constant value failed
 }

src/test/ui/consts/const-eval/const_fn_ptr_fail2.stderr

@@ -1,19 +1,31 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/const_fn_ptr_fail2.rs:19:16
+  --> $DIR/const_fn_ptr_fail2.rs:9:5
    |
-LL |     assert_eq!(Y, 4);
-   |                ^ referenced constant has errors
+LL |     x(y)
+   |     ^^^^
+   |     |
+   |     calling non-const function `double`
+   |     inside `bar` at $DIR/const_fn_ptr_fail2.rs:9:5
+...
+LL | const Y: usize = bar(X, 2); // FIXME: should fail to typeck someday
+   |                  --------- inside `Y` at $DIR/const_fn_ptr_fail2.rs:14:18
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/const_fn_ptr_fail2.rs:21:16
+  --> $DIR/const_fn_ptr_fail2.rs:9:5
    |
-LL |     assert_eq!(Z, 4);
-   |                ^ referenced constant has errors
+LL |     x(y)
+   |     ^^^^
+   |     |
+   |     calling non-const function `double`
+   |     inside `bar` at $DIR/const_fn_ptr_fail2.rs:9:5
+...
+LL | const Z: usize = bar(double, 2); // FIXME: should fail to typeck someday
+   |                  -------------- inside `Z` at $DIR/const_fn_ptr_fail2.rs:15:18
 
 warning: skipping const checks
    |
 help: skipping check that does not even have a feature gate
-  --> $DIR/const_fn_ptr_fail2.rs:12:5
+  --> $DIR/const_fn_ptr_fail2.rs:9:5
    |
 LL |     x(y)
    |     ^^^^
@@ -21,79 +33,3 @@ LL |     x(y)
 error: aborting due to 2 previous errors; 1 warning emitted
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/const_fn_ptr_fail2.rs:12:5
-   |
-LL |     x(y)
-   |     ^^^^
-   |     |
-   |     calling non-const function `double`
-   |     inside `bar` at $DIR/const_fn_ptr_fail2.rs:12:5
-   |     inside `Y` at $DIR/const_fn_ptr_fail2.rs:15:18
-...
-LL | const Y: usize = bar(X, 2); // FIXME: should fail to typeck someday
-   | --------------
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const_fn_ptr_fail2.rs:4:10
-   |
-LL | #![allow(const_err)]
-   |          ^^^^^^^^^
-
-Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/const_fn_ptr_fail2.rs:12:5
-   |
-LL |     x(y)
-   |     ^^^^
-   |     |
-   |     calling non-const function `double`
-   |     inside `bar` at $DIR/const_fn_ptr_fail2.rs:12:5
-   |     inside `Z` at $DIR/const_fn_ptr_fail2.rs:16:18
-...
-LL | const Z: usize = bar(double, 2); // FIXME: should fail to typeck someday
-   | --------------
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const_fn_ptr_fail2.rs:4:10
-   |
-LL | #![allow(const_err)]
-   |          ^^^^^^^^^
-
-Future breakage diagnostic:
-warning: erroneous constant used
-  --> $DIR/const_fn_ptr_fail2.rs:19:5
-   |
-LL |     assert_eq!(Y, 4);
-   |     ^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const_fn_ptr_fail2.rs:4:10
-   |
-LL | #![allow(const_err)]
-   |          ^^^^^^^^^
-   = note: this warning originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
-
-Future breakage diagnostic:
-warning: erroneous constant used
-  --> $DIR/const_fn_ptr_fail2.rs:21:5
-   |
-LL |     assert_eq!(Z, 4);
-   |     ^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/const_fn_ptr_fail2.rs:4:10
-   |
-LL | #![allow(const_err)]
-   |          ^^^^^^^^^
-   = note: this warning originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
-

src/test/ui/consts/const-eval/erroneous-const.rs

@@ -1,11 +1,9 @@
 //! Make sure we error on erroneous consts even if they are unused.
-#![warn(const_err, unconditional_panic)]
+#![allow(unconditional_panic)]
 
 struct PrintName<T>(T);
 impl<T> PrintName<T> {
-    const VOID: () = [()][2]; //~WARN any use of this value will cause an error
-    //~^ WARN this operation will panic at runtime
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    const VOID: () = [()][2]; //~ERROR evaluation of `PrintName::<i32>::VOID` failed
 }
 
 const fn no_codegen<T>() {

src/test/ui/consts/const-eval/erroneous-const.stderr

@@ -1,56 +1,21 @@
-warning: this operation will panic at runtime
+error[E0080]: evaluation of `PrintName::<i32>::VOID` failed
   --> $DIR/erroneous-const.rs:6:22
    |
 LL |     const VOID: () = [()][2];
    |                      ^^^^^^^ index out of bounds: the length is 1 but the index is 2
-   |
-note: the lint level is defined here
-  --> $DIR/erroneous-const.rs:2:20
-   |
-LL | #![warn(const_err, unconditional_panic)]
-   |                    ^^^^^^^^^^^^^^^^^^^
-
-warning: any use of this value will cause an error
-  --> $DIR/erroneous-const.rs:6:22
-   |
-LL |     const VOID: () = [()][2];
-   |     --------------   ^^^^^^^ index out of bounds: the length is 1 but the index is 2
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/erroneous-const.rs:2:9
-   |
-LL | #![warn(const_err, unconditional_panic)]
-   |         ^^^^^^^^^
 
 error[E0080]: could not evaluate static initializer
-  --> $DIR/erroneous-const.rs:15:17
+  --> $DIR/erroneous-const.rs:13:17
    |
 LL |         let _ = PrintName::<T>::VOID;
    |                 ^^^^^^^^^^^^^^^^^^^^
    |                 |
    |                 referenced constant has errors
-   |                 inside `no_codegen::<i32>` at $DIR/erroneous-const.rs:15:17
+   |                 inside `no_codegen::<i32>` at $DIR/erroneous-const.rs:13:17
 ...
 LL | pub static FOO: () = no_codegen::<i32>();
-   |                      ------------------- inside `FOO` at $DIR/erroneous-const.rs:19:22
+   |                      ------------------- inside `FOO` at $DIR/erroneous-const.rs:17:22
 
-error: aborting due to previous error; 2 warnings emitted
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/erroneous-const.rs:6:22
-   |
-LL |     const VOID: () = [()][2];
-   |     --------------   ^^^^^^^ index out of bounds: the length is 1 but the index is 2
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/erroneous-const.rs:2:9
-   |
-LL | #![warn(const_err, unconditional_panic)]
-   |         ^^^^^^^^^
-

src/test/ui/consts/const-eval/erroneous-const2.rs

@@ -1,11 +1,9 @@
 //! Make sure we error on erroneous consts even if they are unused.
-#![warn(const_err, unconditional_panic)]
+#![allow(unconditional_panic)]
 
 struct PrintName<T>(T);
 impl<T> PrintName<T> {
-    const VOID: () = [()][2]; //~WARN any use of this value will cause an error
-    //~^ WARN this operation will panic at runtime
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    const VOID: () = [()][2]; //~ERROR evaluation of `PrintName::<i32>::VOID` failed
 }
 
 pub static FOO: () = {

src/test/ui/consts/const-eval/erroneous-const2.stderr

@@ -1,50 +1,15 @@
-warning: this operation will panic at runtime
+error[E0080]: evaluation of `PrintName::<i32>::VOID` failed
   --> $DIR/erroneous-const2.rs:6:22
    |
 LL |     const VOID: () = [()][2];
    |                      ^^^^^^^ index out of bounds: the length is 1 but the index is 2
-   |
-note: the lint level is defined here
-  --> $DIR/erroneous-const2.rs:2:20
-   |
-LL | #![warn(const_err, unconditional_panic)]
-   |                    ^^^^^^^^^^^^^^^^^^^
-
-warning: any use of this value will cause an error
-  --> $DIR/erroneous-const2.rs:6:22
-   |
-LL |     const VOID: () = [()][2];
-   |     --------------   ^^^^^^^ index out of bounds: the length is 1 but the index is 2
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/erroneous-const2.rs:2:9
-   |
-LL | #![warn(const_err, unconditional_panic)]
-   |         ^^^^^^^^^
 
 error[E0080]: could not evaluate static initializer
-  --> $DIR/erroneous-const2.rs:15:17
+  --> $DIR/erroneous-const2.rs:13:17
    |
 LL |         let _ = PrintName::<i32>::VOID;
    |                 ^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
 
-error: aborting due to previous error; 2 warnings emitted
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/erroneous-const2.rs:6:22
-   |
-LL |     const VOID: () = [()][2];
-   |     --------------   ^^^^^^^ index out of bounds: the length is 1 but the index is 2
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/erroneous-const2.rs:2:9
-   |
-LL | #![warn(const_err, unconditional_panic)]
-   |         ^^^^^^^^^
-

src/test/ui/consts/const-eval/format.rs

@@ -3,8 +3,6 @@ const fn failure() {
     //~^ ERROR cannot call non-const formatting macro in constant functions
     //~| ERROR erroneous constant used
     //~| ERROR erroneous constant used
-    //~| WARN this was previously accepted by the compiler
-    //~| WARN this was previously accepted by the compiler
 }
 
 const fn print() {
@@ -14,8 +12,6 @@ const fn print() {
     //~| ERROR cannot call non-const fn `_print` in constant functions
     //~| ERROR erroneous constant used
     //~| ERROR erroneous constant used
-    //~| WARN this was previously accepted by the compiler
-    //~| WARN this was previously accepted by the compiler
 }
 
 fn main() {}

src/test/ui/consts/const-eval/format.stderr

@@ -8,7 +8,7 @@ LL |     panic!("{:?}", 0);
    = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error[E0015]: cannot call non-const formatting macro in constant functions
-  --> $DIR/format.rs:11:22
+  --> $DIR/format.rs:9:22
    |
 LL |     println!("{:?}", 0);
    |                      ^
@@ -17,7 +17,7 @@ LL |     println!("{:?}", 0);
    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: `Arguments::<'a>::new_v1` is not yet stable as a const fn
-  --> $DIR/format.rs:11:5
+  --> $DIR/format.rs:9:5
    |
 LL |     println!("{:?}", 0);
    |     ^^^^^^^^^^^^^^^^^^^
@@ -26,7 +26,7 @@ LL |     println!("{:?}", 0);
    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error[E0015]: cannot call non-const fn `_print` in constant functions
-  --> $DIR/format.rs:11:5
+  --> $DIR/format.rs:9:5
    |
 LL |     println!("{:?}", 0);
    |     ^^^^^^^^^^^^^^^^^^^
@@ -34,91 +34,35 @@ LL |     println!("{:?}", 0);
    = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
    = note: this error originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: erroneous constant used
+error[E0080]: erroneous constant used
   --> $DIR/format.rs:2:12
    |
 LL |     panic!("{:?}", 0);
    |            ^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
 
-error: erroneous constant used
+error[E0080]: erroneous constant used
   --> $DIR/format.rs:2:20
    |
 LL |     panic!("{:?}", 0);
    |                    ^ referenced constant has errors
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: erroneous constant used
-  --> $DIR/format.rs:11:14
+error[E0080]: erroneous constant used
+  --> $DIR/format.rs:9:14
    |
 LL |     println!("{:?}", 0);
    |              ^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
 
-error: erroneous constant used
-  --> $DIR/format.rs:11:22
+error[E0080]: erroneous constant used
+  --> $DIR/format.rs:9:22
    |
 LL |     println!("{:?}", 0);
    |                      ^ referenced constant has errors
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: aborting due to 8 previous errors
 
-For more information about this error, try `rustc --explain E0015`.
-Future incompatibility report: Future breakage diagnostic:
-error: erroneous constant used
-  --> $DIR/format.rs:2:12
-   |
-LL |     panic!("{:?}", 0);
-   |            ^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: erroneous constant used
-  --> $DIR/format.rs:2:20
-   |
-LL |     panic!("{:?}", 0);
-   |                    ^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-   = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
-
-Future breakage diagnostic:
-error: erroneous constant used
-  --> $DIR/format.rs:11:14
-   |
-LL |     println!("{:?}", 0);
-   |              ^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: erroneous constant used
-  --> $DIR/format.rs:11:22
-   |
-LL |     println!("{:?}", 0);
-   |                      ^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
-
+Some errors have detailed explanations: E0015, E0080.
+For more information about an error, try `rustc --explain E0015`.

src/test/ui/consts/const-eval/index-out-of-bounds-never-type.rs

@@ -1,21 +1,19 @@
 // build-fail
 
 // Regression test for #66975
-#![warn(const_err, unconditional_panic)]
+#![warn(unconditional_panic)]
 #![feature(never_type)]
 
 struct PrintName<T>(T);
 
 impl<T> PrintName<T> {
     const VOID: ! = { let x = 0 * std::mem::size_of::<T>(); [][x] };
-    //~^ WARN any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of `PrintName::<()>::VOID` failed
 
 }
 
 fn f<T>() {
     let _ = PrintName::<T>::VOID;
-    //~^ ERROR erroneous constant encountered
 }
 
 pub fn main() {

src/test/ui/consts/const-eval/index-out-of-bounds-never-type.stderr

@@ -1,37 +1,15 @@
-warning: any use of this value will cause an error
+error[E0080]: evaluation of `PrintName::<()>::VOID` failed
   --> $DIR/index-out-of-bounds-never-type.rs:10:61
    |
 LL |     const VOID: ! = { let x = 0 * std::mem::size_of::<T>(); [][x] };
-   |     -------------                                           ^^^^^ index out of bounds: the length is 0 but the index is 0
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/index-out-of-bounds-never-type.rs:4:9
-   |
-LL | #![warn(const_err, unconditional_panic)]
-   |         ^^^^^^^^^
+   |                                                             ^^^^^ index out of bounds: the length is 0 but the index is 0
 
-error: erroneous constant encountered
-  --> $DIR/index-out-of-bounds-never-type.rs:17:13
+note: the above error was encountered while instantiating `fn f::<()>`
+  --> $DIR/index-out-of-bounds-never-type.rs:20:5
    |
-LL |     let _ = PrintName::<T>::VOID;
-   |             ^^^^^^^^^^^^^^^^^^^^
+LL |     f::<()>();
+   |     ^^^^^^^^^
 
-error: aborting due to previous error; 1 warning emitted
-
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/index-out-of-bounds-never-type.rs:10:61
-   |
-LL |     const VOID: ! = { let x = 0 * std::mem::size_of::<T>(); [][x] };
-   |     -------------                                           ^^^^^ index out of bounds: the length is 0 but the index is 0
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/index-out-of-bounds-never-type.rs:4:9
-   |
-LL | #![warn(const_err, unconditional_panic)]
-   |         ^^^^^^^^^
+error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-eval/issue-43197.rs

@@ -1,23 +1,11 @@
-// build-fail
-
-#![warn(const_err)]
-
 const fn foo(x: u32) -> u32 {
     x
 }
 
 fn main() {
     const X: u32 = 0 - 1;
-    //~^ WARN any use of this value will cause
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR constant
     const Y: u32 = foo(0 - 1);
-    //~^ WARN any use of this value will cause
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR constant
     println!("{} {}", X, Y);
-    //~^ ERROR evaluation of constant value failed
-    //~| ERROR evaluation of constant value failed
-    //~| WARN erroneous constant used [const_err]
-    //~| WARN erroneous constant used [const_err]
-    //~| WARN this was previously accepted by the compiler but is being phased out
-    //~| WARN this was previously accepted by the compiler but is being phased out
 }

src/test/ui/consts/const-eval/issue-43197.stderr

@@ -1,120 +1,15 @@
-warning: any use of this value will cause an error
-  --> $DIR/issue-43197.rs:10:20
+error[E0080]: evaluation of constant value failed
+  --> $DIR/issue-43197.rs:6:20
    |
 LL |     const X: u32 = 0 - 1;
-   |     ------------   ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/issue-43197.rs:3:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
+   |                    ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
 
-warning: any use of this value will cause an error
-  --> $DIR/issue-43197.rs:13:24
+error[E0080]: evaluation of constant value failed
+  --> $DIR/issue-43197.rs:8:24
    |
 LL |     const Y: u32 = foo(0 - 1);
-   |     ------------       ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                        ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
 
-error[E0080]: evaluation of constant value failed
-  --> $DIR/issue-43197.rs:16:23
-   |
-LL |     println!("{} {}", X, Y);
-   |                       ^ referenced constant has errors
-
-warning: erroneous constant used
-  --> $DIR/issue-43197.rs:16:23
-   |
-LL |     println!("{} {}", X, Y);
-   |                       ^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: this warning originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
-
-error[E0080]: evaluation of constant value failed
-  --> $DIR/issue-43197.rs:16:26
-   |
-LL |     println!("{} {}", X, Y);
-   |                          ^ referenced constant has errors
-
-warning: erroneous constant used
-  --> $DIR/issue-43197.rs:16:26
-   |
-LL |     println!("{} {}", X, Y);
-   |                          ^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: this warning originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
-
-error: aborting due to 2 previous errors; 4 warnings emitted
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/issue-43197.rs:10:20
-   |
-LL |     const X: u32 = 0 - 1;
-   |     ------------   ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/issue-43197.rs:3:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/issue-43197.rs:13:24
-   |
-LL |     const Y: u32 = foo(0 - 1);
-   |     ------------       ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/issue-43197.rs:3:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-warning: erroneous constant used
-  --> $DIR/issue-43197.rs:16:23
-   |
-LL |     println!("{} {}", X, Y);
-   |                       ^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/issue-43197.rs:3:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-   = note: this warning originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
-
-Future breakage diagnostic:
-warning: erroneous constant used
-  --> $DIR/issue-43197.rs:16:26
-   |
-LL |     println!("{} {}", X, Y);
-   |                          ^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/issue-43197.rs:3:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-   = note: this warning originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
-

src/test/ui/consts/const-eval/issue-44578.rs

@@ -1,7 +1,5 @@
 // build-fail
 
-#![allow(const_err)]
-
 trait Foo {
     const AMT: usize;
 }
@@ -12,7 +10,7 @@ enum Bar<A, B> {
 }
 
 impl<A: Foo, B: Foo> Foo for Bar<A, B> {
-    const AMT: usize = [A::AMT][(A::AMT > B::AMT) as usize];
+    const AMT: usize = [A::AMT][(A::AMT > B::AMT) as usize]; //~ERROR evaluation of `<Bar<u16, u8> as Foo>::AMT` failed
 }
 
 impl Foo for u8 {
@@ -26,4 +24,5 @@ impl Foo for u16 {
 fn main() {
     println!("{}", <Bar<u16, u8> as Foo>::AMT);
     //~^ ERROR evaluation of constant value failed
+    //~| ERROR erroneous constant used
 }

src/test/ui/consts/const-eval/issue-44578.stderr

@@ -1,40 +1,23 @@
-error[E0080]: evaluation of constant value failed
-  --> $DIR/issue-44578.rs:27:20
-   |
-LL |     println!("{}", <Bar<u16, u8> as Foo>::AMT);
-   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/issue-44578.rs:15:24
+error[E0080]: evaluation of `<Bar<u16, u8> as Foo>::AMT` failed
+  --> $DIR/issue-44578.rs:13:24
    |
 LL |     const AMT: usize = [A::AMT][(A::AMT > B::AMT) as usize];
-   |     ----------------   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ index out of bounds: the length is 1 but the index is 1
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/issue-44578.rs:3:10
-   |
-LL | #![allow(const_err)]
-   |          ^^^^^^^^^
+   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ index out of bounds: the length is 1 but the index is 1
 
-Future breakage diagnostic:
-warning: erroneous constant used
-  --> $DIR/issue-44578.rs:27:20
+error[E0080]: evaluation of constant value failed
+  --> $DIR/issue-44578.rs:25:20
+   |
+LL |     println!("{}", <Bar<u16, u8> as Foo>::AMT);
+   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
+
+error[E0080]: erroneous constant used
+  --> $DIR/issue-44578.rs:25:20
    |
 LL |     println!("{}", <Bar<u16, u8> as Foo>::AMT);
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/issue-44578.rs:3:10
-   |
-LL | #![allow(const_err)]
-   |          ^^^^^^^^^
-   = note: this warning originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
+   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-eval/issue-50814-2.rs

@@ -11,8 +11,7 @@ trait Foo<T> {
 struct A<T>(T);
 
 impl<T: C> Foo<T> for A<T> {
-    const BAR: usize = [5, 6, 7][T::BOO]; //~ ERROR any use of this value will cause an error
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    const BAR: usize = [5, 6, 7][T::BOO]; //~ ERROR evaluation of `<A<()> as Foo<()>>::BAR` failed
 }
 
 fn foo<T: C>() -> &'static usize {

src/test/ui/consts/const-eval/issue-50814-2.stderr

@@ -1,21 +1,17 @@
-error: any use of this value will cause an error
+error[E0080]: evaluation of `<A<()> as Foo<()>>::BAR` failed
   --> $DIR/issue-50814-2.rs:14:24
    |
 LL |     const BAR: usize = [5, 6, 7][T::BOO];
-   |     ----------------   ^^^^^^^^^^^^^^^^^ index out of bounds: the length is 3 but the index is 42
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
+   |                        ^^^^^^^^^^^^^^^^^ index out of bounds: the length is 3 but the index is 42
 
 error[E0080]: evaluation of `foo::<()>` failed
-  --> $DIR/issue-50814-2.rs:19:6
+  --> $DIR/issue-50814-2.rs:18:6
    |
 LL |     &<A<T> as Foo<T>>::BAR
    |      ^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
 
 note: the above error was encountered while instantiating `fn foo::<()>`
-  --> $DIR/issue-50814-2.rs:31:22
+  --> $DIR/issue-50814-2.rs:30:22
    |
 LL |     println!("{:x}", foo::<()>() as *const usize as usize);
    |                      ^^^^^^^^^^^
@@ -23,14 +19,3 @@ LL |     println!("{:x}", foo::<()>() as *const usize as usize);
 error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/issue-50814-2.rs:14:24
-   |
-LL |     const BAR: usize = [5, 6, 7][T::BOO];
-   |     ----------------   ^^^^^^^^^^^^^^^^^ index out of bounds: the length is 3 but the index is 42
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-

src/test/ui/consts/const-eval/issue-50814.rs

@@ -13,8 +13,7 @@ struct Sum<A,B>(A,B);
 
 impl<A: Unsigned, B: Unsigned> Unsigned for Sum<A,B> {
     const MAX: u8 = A::MAX + B::MAX;
-    //~^ ERROR any use of this value will cause an error [const_err]
-    //~| WARN this was previously accepted by the compiler but is being phased out
+    //~^ ERROR evaluation of `<Sum<U8, U8> as Unsigned>::MAX` failed
 }
 
 fn foo<T>(_: T) -> &'static u8 {

src/test/ui/consts/const-eval/issue-50814.stderr

@@ -1,21 +1,17 @@
-error: any use of this value will cause an error
+error[E0080]: evaluation of `<Sum<U8, U8> as Unsigned>::MAX` failed
   --> $DIR/issue-50814.rs:15:21
    |
 LL |     const MAX: u8 = A::MAX + B::MAX;
-   |     -------------   ^^^^^^^^^^^^^^^ attempt to compute `u8::MAX + u8::MAX`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
+   |                     ^^^^^^^^^^^^^^^ attempt to compute `u8::MAX + u8::MAX`, which would overflow
 
 error[E0080]: evaluation of `foo::<i32>` failed
-  --> $DIR/issue-50814.rs:21:6
+  --> $DIR/issue-50814.rs:20:6
    |
 LL |     &Sum::<U8,U8>::MAX
    |      ^^^^^^^^^^^^^^^^^ referenced constant has errors
 
 note: the above error was encountered while instantiating `fn foo::<i32>`
-  --> $DIR/issue-50814.rs:26:5
+  --> $DIR/issue-50814.rs:25:5
    |
 LL |     foo(0);
    |     ^^^^^^
@@ -23,14 +19,3 @@ LL |     foo(0);
 error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/issue-50814.rs:15:21
-   |
-LL |     const MAX: u8 = A::MAX + B::MAX;
-   |     -------------   ^^^^^^^^^^^^^^^ attempt to compute `u8::MAX + u8::MAX`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-

src/test/ui/consts/const-eval/panic-assoc-never-type.rs

@@ -1,7 +1,6 @@
 // build-fail
 
 // Regression test for #66975
-#![warn(const_err)]
 #![feature(never_type)]
 
 struct PrintName;

src/test/ui/consts/const-eval/panic-assoc-never-type.stderr

@@ -1,13 +1,13 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/panic-assoc-never-type.rs:10:21
+  --> $DIR/panic-assoc-never-type.rs:9:21
    |
 LL |     const VOID: ! = panic!();
-   |                     ^^^^^^^^ the evaluated program panicked at 'explicit panic', $DIR/panic-assoc-never-type.rs:10:21
+   |                     ^^^^^^^^ the evaluated program panicked at 'explicit panic', $DIR/panic-assoc-never-type.rs:9:21
    |
    = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error[E0080]: erroneous constant used
-  --> $DIR/panic-assoc-never-type.rs:15:13
+  --> $DIR/panic-assoc-never-type.rs:14:13
    |
 LL |     let _ = PrintName::VOID;
    |             ^^^^^^^^^^^^^^^ referenced constant has errors

src/test/ui/consts/const-eval/panic-never-type.rs

@@ -1,5 +1,4 @@
 // Regression test for #66975
-#![warn(const_err)]
 #![feature(never_type)]
 
 const VOID: ! = panic!();

src/test/ui/consts/const-eval/panic-never-type.stderr

@@ -1,8 +1,8 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/panic-never-type.rs:5:17
+  --> $DIR/panic-never-type.rs:4:17
    |
 LL | const VOID: ! = panic!();
-   |                 ^^^^^^^^ the evaluated program panicked at 'explicit panic', $DIR/panic-never-type.rs:5:17
+   |                 ^^^^^^^^ the evaluated program panicked at 'explicit panic', $DIR/panic-never-type.rs:4:17
    |
    = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
 

src/test/ui/consts/const-eval/partial_ptr_overwrite.rs

@@ -5,9 +5,8 @@ const PARTIAL_OVERWRITE: () = {
     let mut p = &42;
     unsafe {
         let ptr: *mut _ = &mut p;
-        *(ptr as *mut u8) = 123; //~ ERROR any use of this value
+        *(ptr as *mut u8) = 123; //~ ERROR constant
         //~| unable to overwrite parts of a pointer
-        //~| WARN previously accepted
     }
     let x = *p;
 };

src/test/ui/consts/const-eval/partial_ptr_overwrite.stderr

@@ -1,33 +1,12 @@
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/partial_ptr_overwrite.rs:8:9
    |
-LL | const PARTIAL_OVERWRITE: () = {
-   | ---------------------------
-...
 LL |         *(ptr as *mut u8) = 123;
    |         ^^^^^^^^^^^^^^^^^^^^^^^ unable to overwrite parts of a pointer in memory at alloc4
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
 
 error: aborting due to previous error
 
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/partial_ptr_overwrite.rs:8:9
-   |
-LL | const PARTIAL_OVERWRITE: () = {
-   | ---------------------------
-...
-LL |         *(ptr as *mut u8) = 123;
-   |         ^^^^^^^^^^^^^^^^^^^^^^^ unable to overwrite parts of a pointer in memory at alloc4
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-eval/promoted_const_fn_fail.rs

@@ -1,5 +1,3 @@
-#![allow(const_err)]
-
 #[repr(C)]
 union Bar {
     a: &'static u8,

src/test/ui/consts/const-eval/promoted_const_fn_fail.stderr

@@ -1,5 +1,5 @@
 error[E0716]: temporary value dropped while borrowed
-  --> $DIR/promoted_const_fn_fail.rs:19:27
+  --> $DIR/promoted_const_fn_fail.rs:17:27
    |
 LL |     let x: &'static u8 = &(bar() + 1);
    |            -----------    ^^^^^^^^^^^ creates a temporary which is freed while still in use

src/test/ui/consts/const-eval/promoted_const_fn_fail_deny_const_err.rs

@@ -1,5 +1,3 @@
-#![deny(const_err)]
-
 #[repr(C)]
 union Bar {
     a: &'static u8,

src/test/ui/consts/const-eval/promoted_const_fn_fail_deny_const_err.stderr

@@ -1,5 +1,5 @@
 error[E0716]: temporary value dropped while borrowed
-  --> $DIR/promoted_const_fn_fail_deny_const_err.rs:20:27
+  --> $DIR/promoted_const_fn_fail_deny_const_err.rs:18:27
    |
 LL |     let x: &'static u8 = &(bar() + 1);
    |            -----------    ^^^^^^^^^^^ creates a temporary which is freed while still in use

src/test/ui/consts/const-eval/promoted_errors.noopt.stderr

@@ -5,111 +5,40 @@ LL |     0 - 1
    |     ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
    |
 note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:20
+  --> $DIR/promoted_errors.rs:11:9
    |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |                    ^^^^^^^^^^^^^^^^^^^
+LL | #![warn(arithmetic_overflow, unconditional_panic)]
+   |         ^^^^^^^^^^^^^^^^^^^
 
 warning: this operation will panic at runtime
-  --> $DIR/promoted_errors.rs:21:5
+  --> $DIR/promoted_errors.rs:19:5
    |
 LL |     1 / 0
    |     ^^^^^ attempt to divide `1_i32` by zero
    |
 note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:41
+  --> $DIR/promoted_errors.rs:11:30
    |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |                                         ^^^^^^^^^^^^^^^^^^^
+LL | #![warn(arithmetic_overflow, unconditional_panic)]
+   |                              ^^^^^^^^^^^^^^^^^^^
 
 warning: this operation will panic at runtime
-  --> $DIR/promoted_errors.rs:27:5
+  --> $DIR/promoted_errors.rs:23:5
    |
 LL |     1 / (1 - 1)
    |     ^^^^^^^^^^^ attempt to divide `1_i32` by zero
 
 warning: this operation will panic at runtime
-  --> $DIR/promoted_errors.rs:31:5
+  --> $DIR/promoted_errors.rs:27:5
    |
 LL |     1 / (false as i32)
    |     ^^^^^^^^^^^^^^^^^^ attempt to divide `1_i32` by zero
 
 warning: this operation will panic at runtime
-  --> $DIR/promoted_errors.rs:35:5
+  --> $DIR/promoted_errors.rs:31:5
    |
 LL |     [1, 2, 3][4]
    |     ^^^^^^^^^^^^ index out of bounds: the length is 3 but the index is 4
 
-warning: any use of this value will cause an error
-  --> $DIR/promoted_errors.rs:15:5
-   |
-LL |     0 - 1
-   |     ^^^^^
-   |     |
-   |     attempt to compute `0_u32 - 1_u32`, which would overflow
-   |     inside `overflow` at $DIR/promoted_errors.rs:15:5
-   |     inside `X` at $DIR/promoted_errors.rs:43:29
-...
-LL | const X: () = {
-   | -----------
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:9
-   |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |         ^^^^^^^^^
-
-warning: any use of this value will cause an error
-  --> $DIR/promoted_errors.rs:43:28
-   |
-LL | const X: () = {
-   | -----------
-LL |     let _x: &'static u32 = &overflow();
-   |                            ^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-
-warning: 7 warnings emitted
-
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/promoted_errors.rs:15:5
-   |
-LL |     0 - 1
-   |     ^^^^^
-   |     |
-   |     attempt to compute `0_u32 - 1_u32`, which would overflow
-   |     inside `overflow` at $DIR/promoted_errors.rs:15:5
-   |     inside `X` at $DIR/promoted_errors.rs:43:29
-...
-LL | const X: () = {
-   | -----------
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:9
-   |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/promoted_errors.rs:43:28
-   |
-LL | const X: () = {
-   | -----------
-LL |     let _x: &'static u32 = &overflow();
-   |                            ^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:9
-   |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |         ^^^^^^^^^
+warning: 5 warnings emitted
 

src/test/ui/consts/const-eval/promoted_errors.opt.stderr

@@ -5,113 +5,40 @@ LL |     0 - 1
    |     ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
    |
 note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:20
+  --> $DIR/promoted_errors.rs:11:9
    |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |                    ^^^^^^^^^^^^^^^^^^^
+LL | #![warn(arithmetic_overflow, unconditional_panic)]
+   |         ^^^^^^^^^^^^^^^^^^^
 
 warning: this operation will panic at runtime
-  --> $DIR/promoted_errors.rs:21:5
+  --> $DIR/promoted_errors.rs:19:5
    |
 LL |     1 / 0
    |     ^^^^^ attempt to divide `1_i32` by zero
    |
 note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:41
+  --> $DIR/promoted_errors.rs:11:30
    |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |                                         ^^^^^^^^^^^^^^^^^^^
+LL | #![warn(arithmetic_overflow, unconditional_panic)]
+   |                              ^^^^^^^^^^^^^^^^^^^
 
 warning: this operation will panic at runtime
-  --> $DIR/promoted_errors.rs:27:5
+  --> $DIR/promoted_errors.rs:23:5
    |
 LL |     1 / (1 - 1)
    |     ^^^^^^^^^^^ attempt to divide `1_i32` by zero
 
 warning: this operation will panic at runtime
-  --> $DIR/promoted_errors.rs:31:5
+  --> $DIR/promoted_errors.rs:27:5
    |
 LL |     1 / (false as i32)
    |     ^^^^^^^^^^^^^^^^^^ attempt to divide `1_i32` by zero
 
 warning: this operation will panic at runtime
-  --> $DIR/promoted_errors.rs:35:5
+  --> $DIR/promoted_errors.rs:31:5
    |
 LL |     [1, 2, 3][4]
    |     ^^^^^^^^^^^^ index out of bounds: the length is 3 but the index is 4
 
-warning: any use of this value will cause an error
-  --> $DIR/promoted_errors.rs:21:5
-   |
-LL |     1 / 0
-   |     ^^^^^
-   |     |
-   |     attempt to divide `1_i32` by zero
-   |     inside `div_by_zero1` at $DIR/promoted_errors.rs:21:5
-   |     inside `X` at $DIR/promoted_errors.rs:46:29
-...
-LL | const X: () = {
-   | -----------
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:9
-   |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |         ^^^^^^^^^
-
-warning: any use of this value will cause an error
-  --> $DIR/promoted_errors.rs:46:28
-   |
-LL | const X: () = {
-   | -----------
-...
-LL |     let _x: &'static i32 = &div_by_zero1();
-   |                            ^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-
-warning: 7 warnings emitted
-
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/promoted_errors.rs:21:5
-   |
-LL |     1 / 0
-   |     ^^^^^
-   |     |
-   |     attempt to divide `1_i32` by zero
-   |     inside `div_by_zero1` at $DIR/promoted_errors.rs:21:5
-   |     inside `X` at $DIR/promoted_errors.rs:46:29
-...
-LL | const X: () = {
-   | -----------
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:9
-   |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/promoted_errors.rs:46:28
-   |
-LL | const X: () = {
-   | -----------
-...
-LL |     let _x: &'static i32 = &div_by_zero1();
-   |                            ^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:9
-   |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |         ^^^^^^^^^
+warning: 5 warnings emitted
 

src/test/ui/consts/const-eval/promoted_errors.opt_with_overflow_checks.stderr

@@ -5,111 +5,40 @@ LL |     0 - 1
    |     ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
    |
 note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:20
+  --> $DIR/promoted_errors.rs:11:9
    |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |                    ^^^^^^^^^^^^^^^^^^^
+LL | #![warn(arithmetic_overflow, unconditional_panic)]
+   |         ^^^^^^^^^^^^^^^^^^^
 
 warning: this operation will panic at runtime
-  --> $DIR/promoted_errors.rs:21:5
+  --> $DIR/promoted_errors.rs:19:5
    |
 LL |     1 / 0
    |     ^^^^^ attempt to divide `1_i32` by zero
    |
 note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:41
+  --> $DIR/promoted_errors.rs:11:30
    |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |                                         ^^^^^^^^^^^^^^^^^^^
+LL | #![warn(arithmetic_overflow, unconditional_panic)]
+   |                              ^^^^^^^^^^^^^^^^^^^
 
 warning: this operation will panic at runtime
-  --> $DIR/promoted_errors.rs:27:5
+  --> $DIR/promoted_errors.rs:23:5
    |
 LL |     1 / (1 - 1)
    |     ^^^^^^^^^^^ attempt to divide `1_i32` by zero
 
 warning: this operation will panic at runtime
-  --> $DIR/promoted_errors.rs:31:5
+  --> $DIR/promoted_errors.rs:27:5
    |
 LL |     1 / (false as i32)
    |     ^^^^^^^^^^^^^^^^^^ attempt to divide `1_i32` by zero
 
 warning: this operation will panic at runtime
-  --> $DIR/promoted_errors.rs:35:5
+  --> $DIR/promoted_errors.rs:31:5
    |
 LL |     [1, 2, 3][4]
    |     ^^^^^^^^^^^^ index out of bounds: the length is 3 but the index is 4
 
-warning: any use of this value will cause an error
-  --> $DIR/promoted_errors.rs:15:5
-   |
-LL |     0 - 1
-   |     ^^^^^
-   |     |
-   |     attempt to compute `0_u32 - 1_u32`, which would overflow
-   |     inside `overflow` at $DIR/promoted_errors.rs:15:5
-   |     inside `X` at $DIR/promoted_errors.rs:43:29
-...
-LL | const X: () = {
-   | -----------
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:9
-   |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |         ^^^^^^^^^
-
-warning: any use of this value will cause an error
-  --> $DIR/promoted_errors.rs:43:28
-   |
-LL | const X: () = {
-   | -----------
-LL |     let _x: &'static u32 = &overflow();
-   |                            ^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-
-warning: 7 warnings emitted
-
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/promoted_errors.rs:15:5
-   |
-LL |     0 - 1
-   |     ^^^^^
-   |     |
-   |     attempt to compute `0_u32 - 1_u32`, which would overflow
-   |     inside `overflow` at $DIR/promoted_errors.rs:15:5
-   |     inside `X` at $DIR/promoted_errors.rs:43:29
-...
-LL | const X: () = {
-   | -----------
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:9
-   |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |         ^^^^^^^^^
-
-Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/promoted_errors.rs:43:28
-   |
-LL | const X: () = {
-   | -----------
-LL |     let _x: &'static u32 = &overflow();
-   |                            ^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/promoted_errors.rs:11:9
-   |
-LL | #![warn(const_err, arithmetic_overflow, unconditional_panic)]
-   |         ^^^^^^^^^
+warning: 5 warnings emitted
 

src/test/ui/consts/const-eval/promoted_errors.rs

@@ -8,20 +8,16 @@
 
 //! This test ensures that when we promote code that fails to evaluate, the build still succeeds.
 
-#![warn(const_err, arithmetic_overflow, unconditional_panic)]
+#![warn(arithmetic_overflow, unconditional_panic)]
 
 // The only way to have promoteds that fail is in `const fn` called from `const`/`static`.
 const fn overflow() -> u32 {
     0 - 1
-    //[opt_with_overflow_checks,noopt]~^ WARN any use of this value will cause an error
-    //[opt_with_overflow_checks,noopt]~| WARN this was previously accepted by the compiler
-    //~^^^ WARN this arithmetic operation will overflow
+    //~^ WARN this arithmetic operation will overflow
 }
 const fn div_by_zero1() -> i32 {
     1 / 0
-    //[opt]~^ WARN any use of this value will cause an error
-    //[opt]~| WARN this was previously accepted by the compiler but is being phased out
-    //~^^^ WARN this operation will panic at runtime
+    //~^ WARN this operation will panic at runtime
 }
 const fn div_by_zero2() -> i32 {
     1 / (1 - 1)
@@ -36,21 +32,6 @@ const fn oob() -> i32 {
     //~^ WARN this operation will panic at runtime
 }
 
-// An unused constant containing failing promoteds.
-// This should work as long as `const_err` can be turned into just a warning;
-// once it turns into a hard error, just remove `X`.
-const X: () = {
-    let _x: &'static u32 = &overflow();
-    //[opt_with_overflow_checks,noopt]~^ WARN any use of this value will cause an error
-    //[opt_with_overflow_checks,noopt]~| WARN this was previously accepted by the compiler
-    let _x: &'static i32 = &div_by_zero1();
-    //[opt]~^ WARN any use of this value will cause an error
-    //[opt]~| WARN this was previously accepted by the compiler but is being phased out
-    let _x: &'static i32 = &div_by_zero2();
-    let _x: &'static i32 = &div_by_zero3();
-    let _x: &'static i32 = &oob();
-};
-
 const fn mk_false() -> bool { false }
 
 // An actually used constant referencing failing promoteds in dead code.

src/test/ui/consts/const-eval/pub_const_err.rs

@@ -1,10 +0,0 @@
-// check-pass
-#![warn(const_err)]
-
-#![crate_type = "lib"]
-
-pub const Z: u32 = 0 - 1;
-//~^ WARN any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
-
-pub type Foo = [i32; 0 - 1];

src/test/ui/consts/const-eval/pub_const_err.stderr

@@ -1,31 +0,0 @@
-warning: any use of this value will cause an error
-  --> $DIR/pub_const_err.rs:6:20
-   |
-LL | pub const Z: u32 = 0 - 1;
-   | ----------------   ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/pub_const_err.rs:2:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-
-warning: 1 warning emitted
-
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/pub_const_err.rs:6:20
-   |
-LL | pub const Z: u32 = 0 - 1;
-   | ----------------   ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/pub_const_err.rs:2:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-

src/test/ui/consts/const-eval/pub_const_err_bin.rs

@@ -1,10 +0,0 @@
-// check-pass
-#![warn(const_err)]
-
-pub const Z: u32 = 0 - 1;
-//~^ WARN any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
-
-pub type Foo = [i32; 0 - 1];
-
-fn main() {}

src/test/ui/consts/const-eval/pub_const_err_bin.stderr

@@ -1,31 +0,0 @@
-warning: any use of this value will cause an error
-  --> $DIR/pub_const_err_bin.rs:4:20
-   |
-LL | pub const Z: u32 = 0 - 1;
-   | ----------------   ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/pub_const_err_bin.rs:2:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-
-warning: 1 warning emitted
-
-Future incompatibility report: Future breakage diagnostic:
-warning: any use of this value will cause an error
-  --> $DIR/pub_const_err_bin.rs:4:20
-   |
-LL | pub const Z: u32 = 0 - 1;
-   | ----------------   ^^^^^ attempt to compute `0_u32 - 1_u32`, which would overflow
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-note: the lint level is defined here
-  --> $DIR/pub_const_err_bin.rs:2:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-

src/test/ui/consts/const-eval/ref_to_int_match.32bit.stderr

@@ -1,14 +1,11 @@
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/ref_to_int_match.rs:25:27
    |
 LL | const BAR: Int = unsafe { Foo { r: &42 }.f };
-   | --------------            ^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                           ^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
 
 error: could not evaluate constant pattern
   --> $DIR/ref_to_int_match.rs:7:14
@@ -24,16 +21,4 @@ LL |         10..=BAR => {},
 
 error: aborting due to 3 previous errors
 
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ref_to_int_match.rs:25:27
-   |
-LL | const BAR: Int = unsafe { Foo { r: &42 }.f };
-   | --------------            ^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-eval/ref_to_int_match.64bit.stderr

@@ -1,14 +1,11 @@
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/ref_to_int_match.rs:25:27
    |
 LL | const BAR: Int = unsafe { Foo { r: &42 }.f };
-   | --------------            ^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                           ^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
 
 error: could not evaluate constant pattern
   --> $DIR/ref_to_int_match.rs:7:14
@@ -24,16 +21,4 @@ LL |         10..=BAR => {},
 
 error: aborting due to 3 previous errors
 
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ref_to_int_match.rs:25:27
-   |
-LL | const BAR: Int = unsafe { Foo { r: &42 }.f };
-   | --------------            ^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
+For more information about this error, try `rustc --explain E0080`.

src/test/ui/consts/const-eval/ref_to_int_match.rs

@@ -23,5 +23,4 @@ type Int = u64;
 type Int = u32;
 
 const BAR: Int = unsafe { Foo { r: &42 }.f };
-//~^ ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR constant

src/test/ui/consts/const-eval/ub-enum.32bit.stderr

@@ -9,31 +9,26 @@ LL | const BAD_ENUM: Enum = unsafe { mem::transmute(1usize) };
                01 00 00 00                                     │ ....
            }
 
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/ub-enum.rs:27:1
    |
 LL | const BAD_ENUM_PTR: Enum = unsafe { mem::transmute(&1) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
 
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:31:1
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:30:1
    |
 LL | const BAD_ENUM_WRAPPED: Wrap<Enum> = unsafe { mem::transmute(&1) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:44:1
+  --> $DIR/ub-enum.rs:42:1
    |
 LL | const BAD_ENUM2: Enum2 = unsafe { mem::transmute(0usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered 0x00000000, but expected a valid enum tag
@@ -43,47 +38,41 @@ LL | const BAD_ENUM2: Enum2 = unsafe { mem::transmute(0usize) };
                00 00 00 00                                     │ ....
            }
 
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:46:1
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:44:1
    |
 LL | const BAD_ENUM2_PTR: Enum2 = unsafe { mem::transmute(&0) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:50:1
-   |
-LL | const BAD_ENUM2_WRAPPED: Wrap<Enum2> = unsafe { mem::transmute(&0) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:60:42
+  --> $DIR/ub-enum.rs:47:1
+   |
+LL | const BAD_ENUM2_WRAPPED: Wrap<Enum2> = unsafe { mem::transmute(&0) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:56:42
    |
 LL | const BAD_ENUM2_UNDEF : Enum2 = unsafe { MaybeUninit { uninit: () }.init };
    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:65:1
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:61:1
    |
 LL | const BAD_ENUM2_OPTION_PTR: Option<Enum2> = unsafe { mem::transmute(&0) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:83:1
+  --> $DIR/ub-enum.rs:78:1
    |
 LL | const BAD_UNINHABITED_VARIANT1: UninhDiscriminant = unsafe { mem::transmute(1u8) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(B)>.0: encountered a value of the never type `!`
@@ -94,7 +83,7 @@ LL | const BAD_UNINHABITED_VARIANT1: UninhDiscriminant = unsafe { mem::transmute
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:85:1
+  --> $DIR/ub-enum.rs:80:1
    |
 LL | const BAD_UNINHABITED_VARIANT2: UninhDiscriminant = unsafe { mem::transmute(3u8) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(D)>.0: encountered a value of uninhabited type Never
@@ -105,7 +94,7 @@ LL | const BAD_UNINHABITED_VARIANT2: UninhDiscriminant = unsafe { mem::transmute
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:93:1
+  --> $DIR/ub-enum.rs:88:1
    |
 LL | const BAD_OPTION_CHAR: Option<(char, char)> = Some(('x', unsafe { mem::transmute(!0u32) }));
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(Some)>.0.1: encountered 0xffffffff, but expected a valid unicode scalar value (in `0..=0x10FFFF` but not in `0xD800..=0xDFFF`)
@@ -116,13 +105,13 @@ LL | const BAD_OPTION_CHAR: Option<(char, char)> = Some(('x', unsafe { mem::tran
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:98:77
+  --> $DIR/ub-enum.rs:93:77
    |
 LL | const BAD_UNINHABITED_WITH_DATA1: Result<(i32, Never), (i32, !)> = unsafe { mem::transmute(0u64) };
    |                                                                             ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:100:77
+  --> $DIR/ub-enum.rs:95:77
    |
 LL | const BAD_UNINHABITED_WITH_DATA2: Result<(i32, !), (i32, Never)> = unsafe { mem::transmute(0u64) };
    |                                                                             ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type
@@ -130,68 +119,3 @@ LL | const BAD_UNINHABITED_WITH_DATA2: Result<(i32, !), (i32, Never)> = unsafe {
 error: aborting due to 13 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:27:1
-   |
-LL | const BAD_ENUM_PTR: Enum = unsafe { mem::transmute(&1) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:31:1
-   |
-LL | const BAD_ENUM_WRAPPED: Wrap<Enum> = unsafe { mem::transmute(&1) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:46:1
-   |
-LL | const BAD_ENUM2_PTR: Enum2 = unsafe { mem::transmute(&0) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:50:1
-   |
-LL | const BAD_ENUM2_WRAPPED: Wrap<Enum2> = unsafe { mem::transmute(&0) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:65:1
-   |
-LL | const BAD_ENUM2_OPTION_PTR: Option<Enum2> = unsafe { mem::transmute(&0) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-

src/test/ui/consts/const-eval/ub-enum.64bit.stderr

@@ -9,31 +9,26 @@ LL | const BAD_ENUM: Enum = unsafe { mem::transmute(1usize) };
                01 00 00 00 00 00 00 00                         │ ........
            }
 
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/ub-enum.rs:27:1
    |
 LL | const BAD_ENUM_PTR: Enum = unsafe { mem::transmute(&1) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
 
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:31:1
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:30:1
    |
 LL | const BAD_ENUM_WRAPPED: Wrap<Enum> = unsafe { mem::transmute(&1) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:44:1
+  --> $DIR/ub-enum.rs:42:1
    |
 LL | const BAD_ENUM2: Enum2 = unsafe { mem::transmute(0usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-tag>: encountered 0x0000000000000000, but expected a valid enum tag
@@ -43,47 +38,41 @@ LL | const BAD_ENUM2: Enum2 = unsafe { mem::transmute(0usize) };
                00 00 00 00 00 00 00 00                         │ ........
            }
 
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:46:1
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:44:1
    |
 LL | const BAD_ENUM2_PTR: Enum2 = unsafe { mem::transmute(&0) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:50:1
-   |
-LL | const BAD_ENUM2_WRAPPED: Wrap<Enum2> = unsafe { mem::transmute(&0) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:60:42
+  --> $DIR/ub-enum.rs:47:1
+   |
+LL | const BAD_ENUM2_WRAPPED: Wrap<Enum2> = unsafe { mem::transmute(&0) };
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |
+   = help: this code performed an operation that depends on the underlying bytes representing a pointer
+   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
+
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:56:42
    |
 LL | const BAD_ENUM2_UNDEF : Enum2 = unsafe { MaybeUninit { uninit: () }.init };
    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:65:1
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-enum.rs:61:1
    |
 LL | const BAD_ENUM2_OPTION_PTR: Option<Enum2> = unsafe { mem::transmute(&0) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:83:1
+  --> $DIR/ub-enum.rs:78:1
    |
 LL | const BAD_UNINHABITED_VARIANT1: UninhDiscriminant = unsafe { mem::transmute(1u8) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(B)>.0: encountered a value of the never type `!`
@@ -94,7 +83,7 @@ LL | const BAD_UNINHABITED_VARIANT1: UninhDiscriminant = unsafe { mem::transmute
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:85:1
+  --> $DIR/ub-enum.rs:80:1
    |
 LL | const BAD_UNINHABITED_VARIANT2: UninhDiscriminant = unsafe { mem::transmute(3u8) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(D)>.0: encountered a value of uninhabited type Never
@@ -105,7 +94,7 @@ LL | const BAD_UNINHABITED_VARIANT2: UninhDiscriminant = unsafe { mem::transmute
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-enum.rs:93:1
+  --> $DIR/ub-enum.rs:88:1
    |
 LL | const BAD_OPTION_CHAR: Option<(char, char)> = Some(('x', unsafe { mem::transmute(!0u32) }));
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(Some)>.0.1: encountered 0xffffffff, but expected a valid unicode scalar value (in `0..=0x10FFFF` but not in `0xD800..=0xDFFF`)
@@ -116,13 +105,13 @@ LL | const BAD_OPTION_CHAR: Option<(char, char)> = Some(('x', unsafe { mem::tran
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:98:77
+  --> $DIR/ub-enum.rs:93:77
    |
 LL | const BAD_UNINHABITED_WITH_DATA1: Result<(i32, Never), (i32, !)> = unsafe { mem::transmute(0u64) };
    |                                                                             ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-enum.rs:100:77
+  --> $DIR/ub-enum.rs:95:77
    |
 LL | const BAD_UNINHABITED_WITH_DATA2: Result<(i32, !), (i32, Never)> = unsafe { mem::transmute(0u64) };
    |                                                                             ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type
@@ -130,68 +119,3 @@ LL | const BAD_UNINHABITED_WITH_DATA2: Result<(i32, !), (i32, Never)> = unsafe {
 error: aborting due to 13 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:27:1
-   |
-LL | const BAD_ENUM_PTR: Enum = unsafe { mem::transmute(&1) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:31:1
-   |
-LL | const BAD_ENUM_WRAPPED: Wrap<Enum> = unsafe { mem::transmute(&1) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:46:1
-   |
-LL | const BAD_ENUM2_PTR: Enum2 = unsafe { mem::transmute(&0) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:50:1
-   |
-LL | const BAD_ENUM2_WRAPPED: Wrap<Enum2> = unsafe { mem::transmute(&0) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-enum.rs:65:1
-   |
-LL | const BAD_ENUM2_OPTION_PTR: Option<Enum2> = unsafe { mem::transmute(&0) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-

src/test/ui/consts/const-eval/ub-enum.rs

@@ -25,12 +25,10 @@ const BAD_ENUM: Enum = unsafe { mem::transmute(1usize) };
 //~^ ERROR is undefined behavior
 
 const BAD_ENUM_PTR: Enum = unsafe { mem::transmute(&1) };
-//~^ ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR evaluation of constant value failed
 
 const BAD_ENUM_WRAPPED: Wrap<Enum> = unsafe { mem::transmute(&1) };
-//~^ ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR evaluation of constant value failed
 
 // # simple enum with discriminant 2
 
@@ -44,12 +42,10 @@ enum Enum2 {
 const BAD_ENUM2: Enum2 = unsafe { mem::transmute(0usize) };
 //~^ ERROR is undefined behavior
 const BAD_ENUM2_PTR: Enum2 = unsafe { mem::transmute(&0) };
-//~^ ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR evaluation of constant value failed
 // something wrapping the enum so that we test layout first, not enum
 const BAD_ENUM2_WRAPPED: Wrap<Enum2> = unsafe { mem::transmute(&0) };
-//~^ ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR evaluation of constant value failed
 
 // Undef enum discriminant.
 #[repr(C)]
@@ -63,8 +59,7 @@ const BAD_ENUM2_UNDEF : Enum2 = unsafe { MaybeUninit { uninit: () }.init };
 
 // Pointer value in an enum with a niche that is not just 0.
 const BAD_ENUM2_OPTION_PTR: Option<Enum2> = unsafe { mem::transmute(&0) };
-//~^ ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR evaluation of constant value failed
 
 // # valid discriminant for uninhabited variant
 

src/test/ui/consts/const-eval/ub-int-array.32bit.stderr

@@ -1,17 +1,17 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-int-array.rs:16:9
+  --> $DIR/ub-int-array.rs:15:9
    |
 LL |         MaybeUninit { uninit: () }.init,
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-int-array.rs:31:13
+  --> $DIR/ub-int-array.rs:30:13
    |
 LL |             MaybeUninit { uninit: () }.init,
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-int-array.rs:57:13
+  --> $DIR/ub-int-array.rs:56:13
    |
 LL |             MaybeUninit { uninit: () }.init,
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory

src/test/ui/consts/const-eval/ub-int-array.64bit.stderr

@@ -1,17 +1,17 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-int-array.rs:16:9
+  --> $DIR/ub-int-array.rs:15:9
    |
 LL |         MaybeUninit { uninit: () }.init,
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-int-array.rs:31:13
+  --> $DIR/ub-int-array.rs:30:13
    |
 LL |             MaybeUninit { uninit: () }.init,
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-int-array.rs:57:13
+  --> $DIR/ub-int-array.rs:56:13
    |
 LL |             MaybeUninit { uninit: () }.init,
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory

src/test/ui/consts/const-eval/ub-int-array.rs

@@ -1,4 +1,3 @@
-#![allow(const_err)] // make sure we cannot allow away the errors tested here
 // stderr-per-bitwidth
 //! Test the "array of int" fast path in validity checking, and in particular whether it
 //! points at the right array element.

src/test/ui/consts/const-eval/ub-nonnull.32bit.stderr

@@ -10,13 +10,13 @@ LL | const NULL_PTR: NonNull<u8> = unsafe { mem::transmute(0usize) };
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-nonnull.rs:19:30
+  --> $DIR/ub-nonnull.rs:18:30
    |
 LL |     let out_of_bounds_ptr = &ptr[255];
    |                              ^^^^^^^^ dereferencing pointer failed: alloc11 has size 1, so pointer to 256 bytes starting at offset 0 is out-of-bounds
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-nonnull.rs:23:1
+  --> $DIR/ub-nonnull.rs:22:1
    |
 LL | const NULL_U8: NonZeroU8 = unsafe { mem::transmute(0u8) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 0, but expected something greater or equal to 1
@@ -27,7 +27,7 @@ LL | const NULL_U8: NonZeroU8 = unsafe { mem::transmute(0u8) };
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-nonnull.rs:25:1
+  --> $DIR/ub-nonnull.rs:24:1
    |
 LL | const NULL_USIZE: NonZeroUsize = unsafe { mem::transmute(0usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 0, but expected something greater or equal to 1
@@ -38,13 +38,13 @@ LL | const NULL_USIZE: NonZeroUsize = unsafe { mem::transmute(0usize) };
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-nonnull.rs:33:36
+  --> $DIR/ub-nonnull.rs:32:36
    |
 LL | const UNINIT: NonZeroU8 = unsafe { MaybeUninit { uninit: () }.init };
    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-nonnull.rs:42:1
+  --> $DIR/ub-nonnull.rs:41:1
    |
 LL | const BAD_RANGE1: RestrictedRange1 = unsafe { RestrictedRange1(42) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 42, but expected something in the range 10..=30
@@ -55,7 +55,7 @@ LL | const BAD_RANGE1: RestrictedRange1 = unsafe { RestrictedRange1(42) };
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-nonnull.rs:48:1
+  --> $DIR/ub-nonnull.rs:47:1
    |
 LL | const BAD_RANGE2: RestrictedRange2 = unsafe { RestrictedRange2(20) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 20, but expected something less or equal to 10, or greater or equal to 30

src/test/ui/consts/const-eval/ub-nonnull.64bit.stderr

@@ -10,13 +10,13 @@ LL | const NULL_PTR: NonNull<u8> = unsafe { mem::transmute(0usize) };
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-nonnull.rs:19:30
+  --> $DIR/ub-nonnull.rs:18:30
    |
 LL |     let out_of_bounds_ptr = &ptr[255];
    |                              ^^^^^^^^ dereferencing pointer failed: alloc11 has size 1, so pointer to 256 bytes starting at offset 0 is out-of-bounds
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-nonnull.rs:23:1
+  --> $DIR/ub-nonnull.rs:22:1
    |
 LL | const NULL_U8: NonZeroU8 = unsafe { mem::transmute(0u8) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 0, but expected something greater or equal to 1
@@ -27,7 +27,7 @@ LL | const NULL_U8: NonZeroU8 = unsafe { mem::transmute(0u8) };
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-nonnull.rs:25:1
+  --> $DIR/ub-nonnull.rs:24:1
    |
 LL | const NULL_USIZE: NonZeroUsize = unsafe { mem::transmute(0usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 0, but expected something greater or equal to 1
@@ -38,13 +38,13 @@ LL | const NULL_USIZE: NonZeroUsize = unsafe { mem::transmute(0usize) };
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-nonnull.rs:33:36
+  --> $DIR/ub-nonnull.rs:32:36
    |
 LL | const UNINIT: NonZeroU8 = unsafe { MaybeUninit { uninit: () }.init };
    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-nonnull.rs:42:1
+  --> $DIR/ub-nonnull.rs:41:1
    |
 LL | const BAD_RANGE1: RestrictedRange1 = unsafe { RestrictedRange1(42) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 42, but expected something in the range 10..=30
@@ -55,7 +55,7 @@ LL | const BAD_RANGE1: RestrictedRange1 = unsafe { RestrictedRange1(42) };
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-nonnull.rs:48:1
+  --> $DIR/ub-nonnull.rs:47:1
    |
 LL | const BAD_RANGE2: RestrictedRange2 = unsafe { RestrictedRange2(20) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 20, but expected something less or equal to 10, or greater or equal to 30

src/test/ui/consts/const-eval/ub-nonnull.rs

@@ -1,6 +1,6 @@
 // stderr-per-bitwidth
 #![feature(rustc_attrs)]
-#![allow(const_err, invalid_value)] // make sure we cannot allow away the errors tested here
+#![allow(invalid_value)] // make sure we cannot allow away the errors tested here
 
 use std::mem;
 use std::ptr::NonNull;
@@ -12,7 +12,6 @@ const NON_NULL_PTR: NonNull<u8> = unsafe { mem::transmute(&1) };
 const NULL_PTR: NonNull<u8> = unsafe { mem::transmute(0usize) };
 //~^ ERROR it is undefined behavior to use this value
 
-#[deny(const_err)] // this triggers a `const_err` so validation does not even happen
 const OUT_OF_BOUNDS_PTR: NonNull<u8> = { unsafe {
     let ptr: &[u8; 256] = mem::transmute(&0u8); // &0 gets promoted so it does not dangle
     // Use address-of-element for pointer arithmetic. This could wrap around to null!

src/test/ui/consts/const-eval/ub-ref-ptr.32bit.stderr

@@ -42,60 +42,47 @@ LL | const NULL_BOX: Box<u16> = unsafe { mem::transmute(0usize) };
                00 00 00 00                                     │ ....
            }
 
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/ub-ref-ptr.rs:31:1
    |
 LL | const REF_AS_USIZE: usize = unsafe { mem::transmute(&0) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
 
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:35:39
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-ref-ptr.rs:34:39
    |
 LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }];
-   | ----------------------------------    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:35:38
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-ref-ptr.rs:34:38
    |
 LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }];
-   | ----------------------------------   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
 
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:41:86
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-ref-ptr.rs:38:86
    |
 LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) };
-   | ------------------------------------------                                           ^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                                                                      ^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:41:85
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-ref-ptr.rs:38:85
    |
 LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) };
-   | ------------------------------------------                                          ^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                                                                                     ^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-ref-ptr.rs:47:1
+  --> $DIR/ub-ref-ptr.rs:42:1
    |
 LL | const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a dangling reference (address 0x539 is unallocated)
@@ -106,7 +93,7 @@ LL | const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) };
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-ref-ptr.rs:50:1
+  --> $DIR/ub-ref-ptr.rs:45:1
    |
 LL | const USIZE_AS_BOX: Box<u8> = unsafe { mem::transmute(1337usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a dangling box (address 0x539 is unallocated)
@@ -117,13 +104,13 @@ LL | const USIZE_AS_BOX: Box<u8> = unsafe { mem::transmute(1337usize) };
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-ref-ptr.rs:53:41
+  --> $DIR/ub-ref-ptr.rs:48:41
    |
 LL | const UNINIT_PTR: *const i32 = unsafe { MaybeUninit { uninit: () }.init };
    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-ref-ptr.rs:57:1
+  --> $DIR/ub-ref-ptr.rs:52:1
    |
 LL | const NULL_FN_PTR: fn() = unsafe { mem::transmute(0usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered null pointer, but expected a function pointer
@@ -134,13 +121,13 @@ LL | const NULL_FN_PTR: fn() = unsafe { mem::transmute(0usize) };
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-ref-ptr.rs:59:38
+  --> $DIR/ub-ref-ptr.rs:54:38
    |
 LL | const UNINIT_FN_PTR: fn() = unsafe { MaybeUninit { uninit: () }.init };
    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-ref-ptr.rs:62:1
+  --> $DIR/ub-ref-ptr.rs:57:1
    |
 LL | const DANGLING_FN_PTR: fn() = unsafe { mem::transmute(13usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 0xd[noalloc], but expected a function pointer
@@ -151,7 +138,7 @@ LL | const DANGLING_FN_PTR: fn() = unsafe { mem::transmute(13usize) };
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-ref-ptr.rs:64:1
+  --> $DIR/ub-ref-ptr.rs:59:1
    |
 LL | const DATA_FN_PTR: fn() = unsafe { mem::transmute(&13) };
    | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered alloc41, but expected a function pointer
@@ -164,64 +151,3 @@ LL | const DATA_FN_PTR: fn() = unsafe { mem::transmute(&13) };
 error: aborting due to 16 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:31:1
-   |
-LL | const REF_AS_USIZE: usize = unsafe { mem::transmute(&0) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:35:39
-   |
-LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }];
-   | ----------------------------------    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:35:38
-   |
-LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }];
-   | ----------------------------------   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:41:86
-   |
-LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) };
-   | ------------------------------------------                                           ^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:41:85
-   |
-LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) };
-   | ------------------------------------------                                          ^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-

src/test/ui/consts/const-eval/ub-ref-ptr.64bit.stderr

@@ -42,60 +42,47 @@ LL | const NULL_BOX: Box<u16> = unsafe { mem::transmute(0usize) };
                00 00 00 00 00 00 00 00                         │ ........
            }
 
-error: any use of this value will cause an error
+error[E0080]: evaluation of constant value failed
   --> $DIR/ub-ref-ptr.rs:31:1
    |
 LL | const REF_AS_USIZE: usize = unsafe { mem::transmute(&0) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
 
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:35:39
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-ref-ptr.rs:34:39
    |
 LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }];
-   | ----------------------------------    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:35:38
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-ref-ptr.rs:34:38
    |
 LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }];
-   | ----------------------------------   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
 
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:41:86
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-ref-ptr.rs:38:86
    |
 LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) };
-   | ------------------------------------------                                           ^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
+   |                                                                                      ^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:41:85
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-ref-ptr.rs:38:85
    |
 LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) };
-   | ------------------------------------------                                          ^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                                                                                     ^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-ref-ptr.rs:47:1
+  --> $DIR/ub-ref-ptr.rs:42:1
    |
 LL | const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a dangling reference (address 0x539 is unallocated)
@@ -106,7 +93,7 @@ LL | const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) };
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-ref-ptr.rs:50:1
+  --> $DIR/ub-ref-ptr.rs:45:1
    |
 LL | const USIZE_AS_BOX: Box<u8> = unsafe { mem::transmute(1337usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a dangling box (address 0x539 is unallocated)
@@ -117,13 +104,13 @@ LL | const USIZE_AS_BOX: Box<u8> = unsafe { mem::transmute(1337usize) };
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-ref-ptr.rs:53:41
+  --> $DIR/ub-ref-ptr.rs:48:41
    |
 LL | const UNINIT_PTR: *const i32 = unsafe { MaybeUninit { uninit: () }.init };
    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-ref-ptr.rs:57:1
+  --> $DIR/ub-ref-ptr.rs:52:1
    |
 LL | const NULL_FN_PTR: fn() = unsafe { mem::transmute(0usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered null pointer, but expected a function pointer
@@ -134,13 +121,13 @@ LL | const NULL_FN_PTR: fn() = unsafe { mem::transmute(0usize) };
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-ref-ptr.rs:59:38
+  --> $DIR/ub-ref-ptr.rs:54:38
    |
 LL | const UNINIT_FN_PTR: fn() = unsafe { MaybeUninit { uninit: () }.init };
    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-ref-ptr.rs:62:1
+  --> $DIR/ub-ref-ptr.rs:57:1
    |
 LL | const DANGLING_FN_PTR: fn() = unsafe { mem::transmute(13usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered 0xd[noalloc], but expected a function pointer
@@ -151,7 +138,7 @@ LL | const DANGLING_FN_PTR: fn() = unsafe { mem::transmute(13usize) };
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-ref-ptr.rs:64:1
+  --> $DIR/ub-ref-ptr.rs:59:1
    |
 LL | const DATA_FN_PTR: fn() = unsafe { mem::transmute(&13) };
    | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered alloc41, but expected a function pointer
@@ -164,64 +151,3 @@ LL | const DATA_FN_PTR: fn() = unsafe { mem::transmute(&13) };
 error: aborting due to 16 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:31:1
-   |
-LL | const REF_AS_USIZE: usize = unsafe { mem::transmute(&0) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:35:39
-   |
-LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }];
-   | ----------------------------------    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:35:38
-   |
-LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }];
-   | ----------------------------------   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:41:86
-   |
-LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) };
-   | ------------------------------------------                                           ^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-ref-ptr.rs:41:85
-   |
-LL | const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) };
-   | ------------------------------------------                                          ^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-

src/test/ui/consts/const-eval/ub-ref-ptr.rs

@@ -29,20 +29,15 @@ const NULL_BOX: Box<u16> = unsafe { mem::transmute(0usize) };
 // but that would fail to compile; so we ended up breaking user code that would
 // have worked fine had we not promoted.
 const REF_AS_USIZE: usize = unsafe { mem::transmute(&0) };
-//~^ ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR evaluation of constant value failed
 
 const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }];
-//~^ ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
-//~| ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR evaluation of constant value failed
+//~| ERROR evaluation of constant value failed
 
 const REF_AS_USIZE_BOX_SLICE: Box<[usize]> = unsafe { mem::transmute::<&[usize], _>(&[mem::transmute(&0)]) };
-//~^ ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
-//~| ERROR any use of this value will cause an error
-//~| WARN this was previously accepted by the compiler but is being phased out
+//~^ ERROR evaluation of constant value failed
+//~| ERROR evaluation of constant value failed
 
 const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) };
 //~^ ERROR it is undefined behavior to use this value

src/test/ui/consts/const-eval/ub-uninhabit.32bit.stderr

@@ -1,5 +1,5 @@
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-uninhabit.rs:15:1
+  --> $DIR/ub-uninhabit.rs:14:1
    |
 LL | const BAD_BAD_BAD: Bar = unsafe { MaybeUninit { uninit: () }.init };
    | ^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a value of uninhabited type Bar
@@ -8,7 +8,7 @@ LL | const BAD_BAD_BAD: Bar = unsafe { MaybeUninit { uninit: () }.init };
    = note: the raw bytes of the constant (size: 0, align: 1) {}
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-uninhabit.rs:18:1
+  --> $DIR/ub-uninhabit.rs:17:1
    |
 LL | const BAD_BAD_REF: &Bar = unsafe { mem::transmute(1usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a reference pointing to uninhabited type Bar
@@ -19,7 +19,7 @@ LL | const BAD_BAD_REF: &Bar = unsafe { mem::transmute(1usize) };
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-uninhabit.rs:21:1
+  --> $DIR/ub-uninhabit.rs:20:1
    |
 LL | const BAD_BAD_ARRAY: [Bar; 1] = unsafe { MaybeUninit { uninit: () }.init };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at [0]: encountered a value of uninhabited type Bar

src/test/ui/consts/const-eval/ub-uninhabit.64bit.stderr

@@ -1,5 +1,5 @@
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-uninhabit.rs:15:1
+  --> $DIR/ub-uninhabit.rs:14:1
    |
 LL | const BAD_BAD_BAD: Bar = unsafe { MaybeUninit { uninit: () }.init };
    | ^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a value of uninhabited type Bar
@@ -8,7 +8,7 @@ LL | const BAD_BAD_BAD: Bar = unsafe { MaybeUninit { uninit: () }.init };
    = note: the raw bytes of the constant (size: 0, align: 1) {}
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-uninhabit.rs:18:1
+  --> $DIR/ub-uninhabit.rs:17:1
    |
 LL | const BAD_BAD_REF: &Bar = unsafe { mem::transmute(1usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a reference pointing to uninhabited type Bar
@@ -19,7 +19,7 @@ LL | const BAD_BAD_REF: &Bar = unsafe { mem::transmute(1usize) };
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-uninhabit.rs:21:1
+  --> $DIR/ub-uninhabit.rs:20:1
    |
 LL | const BAD_BAD_ARRAY: [Bar; 1] = unsafe { MaybeUninit { uninit: () }.init };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at [0]: encountered a value of uninhabited type Bar

src/test/ui/consts/const-eval/ub-uninhabit.rs

@@ -1,5 +1,4 @@
 // stderr-per-bitwidth
-#![allow(const_err)] // make sure we cannot allow away the errors tested here
 
 use std::mem;
 

src/test/ui/consts/const-eval/ub-upvars.rs

@@ -1,5 +1,5 @@
 // stderr-per-bitwidth
-#![allow(const_err, invalid_value)] // make sure we cannot allow away the errors tested here
+#![allow(invalid_value)] // make sure we cannot allow away the errors tested here
 
 use std::mem;
 

src/test/ui/consts/const-eval/ub-wide-ptr.32bit.stderr

@@ -1,5 +1,5 @@
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:37:1
+  --> $DIR/ub-wide-ptr.rs:36:1
    |
 LL | const STR_TOO_LONG: &str = unsafe { mem::transmute((&42u8, 999usize)) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a dangling reference (going beyond the bounds of its allocation)
@@ -10,7 +10,7 @@ LL | const STR_TOO_LONG: &str = unsafe { mem::transmute((&42u8, 999usize)) };
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:39:1
+  --> $DIR/ub-wide-ptr.rs:38:1
    |
 LL | const NESTED_STR_MUCH_TOO_LONG: (&str,) = (unsafe { mem::transmute((&42, usize::MAX)) },);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .0: encountered invalid reference metadata: slice is bigger than largest supported object
@@ -20,31 +20,26 @@ LL | const NESTED_STR_MUCH_TOO_LONG: (&str,) = (unsafe { mem::transmute((&42, us
                ╾─allocN─╼ ff ff ff ff                         │ ╾──╼....
            }
 
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:42:1
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-wide-ptr.rs:41:1
    |
 LL | const STR_LENGTH_PTR: &str = unsafe { mem::transmute((&42u8, &3)) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
 
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:46:1
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-wide-ptr.rs:44:1
    |
 LL | const MY_STR_LENGTH_PTR: &MyStr = unsafe { mem::transmute((&42u8, &3)) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:49:1
+  --> $DIR/ub-wide-ptr.rs:46:1
    |
 LL | const MY_STR_MUCH_TOO_LONG: &MyStr = unsafe { mem::transmute((&42u8, usize::MAX)) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered invalid reference metadata: slice is bigger than largest supported object
@@ -55,7 +50,7 @@ LL | const MY_STR_MUCH_TOO_LONG: &MyStr = unsafe { mem::transmute((&42u8, usize:
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:53:1
+  --> $DIR/ub-wide-ptr.rs:50:1
    |
 LL | const STR_NO_INIT: &str = unsafe { mem::transmute::<&[_], _>(&[MaybeUninit::<u8> { uninit: () }]) };
    | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<deref>: encountered uninitialized data in `str`
@@ -66,7 +61,7 @@ LL | const STR_NO_INIT: &str = unsafe { mem::transmute::<&[_], _>(&[MaybeUninit:
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:56:1
+  --> $DIR/ub-wide-ptr.rs:53:1
    |
 LL | const MYSTR_NO_INIT: &MyStr = unsafe { mem::transmute::<&[_], _>(&[MaybeUninit::<u8> { uninit: () }]) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<deref>.0: encountered uninitialized data in `str`
@@ -77,13 +72,13 @@ LL | const MYSTR_NO_INIT: &MyStr = unsafe { mem::transmute::<&[_], _>(&[MaybeUni
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-wide-ptr.rs:63:1
+  --> $DIR/ub-wide-ptr.rs:60:1
    |
 LL | const SLICE_LENGTH_UNINIT: &[u8] = unsafe {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:70:1
+  --> $DIR/ub-wide-ptr.rs:67:1
    |
 LL | const SLICE_TOO_LONG: &[u8] = unsafe { mem::transmute((&42u8, 999usize)) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a dangling reference (going beyond the bounds of its allocation)
@@ -94,7 +89,7 @@ LL | const SLICE_TOO_LONG: &[u8] = unsafe { mem::transmute((&42u8, 999usize)) };
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:73:1
+  --> $DIR/ub-wide-ptr.rs:70:1
    |
 LL | const SLICE_TOO_LONG_OVERFLOW: &[u32] = unsafe { mem::transmute((&42u32, isize::MAX)) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered invalid reference metadata: slice is bigger than largest supported object
@@ -104,19 +99,17 @@ LL | const SLICE_TOO_LONG_OVERFLOW: &[u32] = unsafe { mem::transmute((&42u32, is
                ╾─allocN─╼ ff ff ff 7f                         │ ╾──╼....
            }
 
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:76:1
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-wide-ptr.rs:73:1
    |
 LL | const SLICE_LENGTH_PTR: &[u8] = unsafe { mem::transmute((&42u8, &3)) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:80:1
+  --> $DIR/ub-wide-ptr.rs:76:1
    |
 LL | const SLICE_TOO_LONG_BOX: Box<[u8]> = unsafe { mem::transmute((&42u8, 999usize)) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a dangling box (going beyond the bounds of its allocation)
@@ -126,19 +119,17 @@ LL | const SLICE_TOO_LONG_BOX: Box<[u8]> = unsafe { mem::transmute((&42u8, 999us
                ╾─allocN─╼ e7 03 00 00                         │ ╾──╼....
            }
 
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:83:1
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-wide-ptr.rs:79:1
    |
 LL | const SLICE_LENGTH_PTR_BOX: Box<[u8]> = unsafe { mem::transmute((&42u8, &3)) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
    = help: this code performed an operation that depends on the underlying bytes representing a pointer
    = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:88:1
+  --> $DIR/ub-wide-ptr.rs:83:1
    |
 LL | const SLICE_CONTENT_INVALID: &[bool] = &[unsafe { mem::transmute(3u8) }];
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<deref>[0]: encountered 0x03, but expected a boolean
@@ -148,17 +139,14 @@ LL | const SLICE_CONTENT_INVALID: &[bool] = &[unsafe { mem::transmute(3u8) }];
                ╾─allocN─╼                                     │ ╾──╼
            }
 
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:88:40
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-wide-ptr.rs:83:40
    |
 LL | const SLICE_CONTENT_INVALID: &[bool] = &[unsafe { mem::transmute(3u8) }];
-   | ------------------------------------   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:96:1
+  --> $DIR/ub-wide-ptr.rs:90:1
    |
 LL | const MYSLICE_PREFIX_BAD: &MySliceBool = &MySlice(unsafe { mem::transmute(3u8) }, [false]);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<deref>.0: encountered 0x03, but expected a boolean
@@ -168,17 +156,14 @@ LL | const MYSLICE_PREFIX_BAD: &MySliceBool = &MySlice(unsafe { mem::transmute(3
                ╾allocN─╼                                     │ ╾──╼
            }
 
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:96:42
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-wide-ptr.rs:90:42
    |
 LL | const MYSLICE_PREFIX_BAD: &MySliceBool = &MySlice(unsafe { mem::transmute(3u8) }, [false]);
-   | --------------------------------------   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:101:1
+  --> $DIR/ub-wide-ptr.rs:94:1
    |
 LL | const MYSLICE_SUFFIX_BAD: &MySliceBool = &MySlice(true, [unsafe { mem::transmute(3u8) }]);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<deref>.1[0]: encountered 0x03, but expected a boolean
@@ -188,23 +173,20 @@ LL | const MYSLICE_SUFFIX_BAD: &MySliceBool = &MySlice(true, [unsafe { mem::tran
                ╾allocN─╼                                     │ ╾──╼
            }
 
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:101:42
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-wide-ptr.rs:94:42
    |
 LL | const MYSLICE_SUFFIX_BAD: &MySliceBool = &MySlice(true, [unsafe { mem::transmute(3u8) }]);
-   | --------------------------------------   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-wide-ptr.rs:110:1
+  --> $DIR/ub-wide-ptr.rs:102:1
    |
 LL | const RAW_SLICE_LENGTH_UNINIT: *const [u8] = unsafe {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:119:1
+  --> $DIR/ub-wide-ptr.rs:111:1
    |
 LL | const TRAIT_OBJ_SHORT_VTABLE_1: W<&dyn Trait> = unsafe { mem::transmute(W((&92u8, &3u8))) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .0: encountered allocN, but expected a vtable pointer
@@ -215,7 +197,7 @@ LL | const TRAIT_OBJ_SHORT_VTABLE_1: W<&dyn Trait> = unsafe { mem::transmute(W((
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:123:1
+  --> $DIR/ub-wide-ptr.rs:115:1
    |
 LL | const TRAIT_OBJ_SHORT_VTABLE_2: W<&dyn Trait> = unsafe { mem::transmute(W((&92u8, &3u64))) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .0: encountered allocN, but expected a vtable pointer
@@ -226,7 +208,7 @@ LL | const TRAIT_OBJ_SHORT_VTABLE_2: W<&dyn Trait> = unsafe { mem::transmute(W((
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:127:1
+  --> $DIR/ub-wide-ptr.rs:119:1
    |
 LL | const TRAIT_OBJ_INT_VTABLE: W<&dyn Trait> = unsafe { mem::transmute(W((&92u8, 4usize))) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .0: encountered 0x4[noalloc], but expected a vtable pointer
@@ -237,25 +219,25 @@ LL | const TRAIT_OBJ_INT_VTABLE: W<&dyn Trait> = unsafe { mem::transmute(W((&92u
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-wide-ptr.rs:130:57
+  --> $DIR/ub-wide-ptr.rs:122:57
    |
 LL | const TRAIT_OBJ_UNALIGNED_VTABLE: &dyn Trait = unsafe { mem::transmute((&92u8, &[0u8; 128])) };
    |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using allocN as vtable pointer but it does not point to a vtable
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-wide-ptr.rs:133:57
+  --> $DIR/ub-wide-ptr.rs:125:57
    |
 LL | const TRAIT_OBJ_BAD_DROP_FN_NULL: &dyn Trait = unsafe { mem::transmute((&92u8, &[0usize; 8])) };
    |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using allocN as vtable pointer but it does not point to a vtable
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-wide-ptr.rs:136:56
+  --> $DIR/ub-wide-ptr.rs:128:56
    |
 LL | const TRAIT_OBJ_BAD_DROP_FN_INT: &dyn Trait = unsafe { mem::transmute((&92u8, &[1usize; 8])) };
    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using allocN as vtable pointer but it does not point to a vtable
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:139:1
+  --> $DIR/ub-wide-ptr.rs:131:1
    |
 LL | const TRAIT_OBJ_BAD_DROP_FN_NOT_FN_PTR: W<&dyn Trait> = unsafe { mem::transmute(W((&92u8, &[&42u8; 8]))) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .0: encountered allocN, but expected a vtable pointer
@@ -266,7 +248,7 @@ LL | const TRAIT_OBJ_BAD_DROP_FN_NOT_FN_PTR: W<&dyn Trait> = unsafe { mem::trans
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:144:1
+  --> $DIR/ub-wide-ptr.rs:136:1
    |
 LL | const TRAIT_OBJ_CONTENT_INVALID: &dyn Trait = unsafe { mem::transmute::<_, &bool>(&3u8) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<deref>.<dyn-downcast>: encountered 0x03, but expected a boolean
@@ -277,7 +259,7 @@ LL | const TRAIT_OBJ_CONTENT_INVALID: &dyn Trait = unsafe { mem::transmute::<_,
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:149:1
+  --> $DIR/ub-wide-ptr.rs:141:1
    |
 LL | const RAW_TRAIT_OBJ_VTABLE_NULL: *const dyn Trait = unsafe { mem::transmute((&92u8, 0usize)) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered null pointer, but expected a vtable pointer
@@ -288,7 +270,7 @@ LL | const RAW_TRAIT_OBJ_VTABLE_NULL: *const dyn Trait = unsafe { mem::transmute
            }
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-wide-ptr.rs:151:1
+  --> $DIR/ub-wide-ptr.rs:143:1
    |
 LL | const RAW_TRAIT_OBJ_VTABLE_INVALID: *const dyn Trait = unsafe { mem::transmute((&92u8, &3u64)) };
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered allocN, but expected a vtable pointer
@@ -299,13 +281,13 @@ LL | const RAW_TRAIT_OBJ_VTABLE_INVALID: *const dyn Trait = unsafe { mem::transm
            }
 
 error[E0080]: could not evaluate static initializer
-  --> $DIR/ub-wide-ptr.rs:157:5
+  --> $DIR/ub-wide-ptr.rs:149:5
    |
 LL |     mem::transmute::<_, &dyn Trait>((&92u8, 0usize))
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ out-of-bounds pointer use: null pointer is a dangling pointer (it has no provenance)
 
 error[E0080]: could not evaluate static initializer
-  --> $DIR/ub-wide-ptr.rs:161:5
+  --> $DIR/ub-wide-ptr.rs:153:5
    |
 LL |     mem::transmute::<_, &dyn Trait>((&92u8, &3u64))
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ using allocN as vtable pointer but it does not point to a vtable
@@ -313,88 +295,3 @@ LL |     mem::transmute::<_, &dyn Trait>((&92u8, &3u64))
 error: aborting due to 32 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
-Future incompatibility report: Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:42:1
-   |
-LL | const STR_LENGTH_PTR: &str = unsafe { mem::transmute((&42u8, &3)) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:46:1
-   |
-LL | const MY_STR_LENGTH_PTR: &MyStr = unsafe { mem::transmute((&42u8, &3)) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:76:1
-   |
-LL | const SLICE_LENGTH_PTR: &[u8] = unsafe { mem::transmute((&42u8, &3)) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:83:1
-   |
-LL | const SLICE_LENGTH_PTR_BOX: Box<[u8]> = unsafe { mem::transmute((&42u8, &3)) };
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = help: this code performed an operation that depends on the underlying bytes representing a pointer
-   = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:88:40
-   |
-LL | const SLICE_CONTENT_INVALID: &[bool] = &[unsafe { mem::transmute(3u8) }];
-   | ------------------------------------   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:96:42
-   |
-LL | const MYSLICE_PREFIX_BAD: &MySliceBool = &MySlice(unsafe { mem::transmute(3u8) }, [false]);
-   | --------------------------------------   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-
-Future breakage diagnostic:
-error: any use of this value will cause an error
-  --> $DIR/ub-wide-ptr.rs:101:42
-   |
-LL | const MYSLICE_SUFFIX_BAD: &MySliceBool = &MySlice(true, [unsafe { mem::transmute(3u8) }]);
-   | --------------------------------------   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
-   = note: `#[deny(const_err)]` on by default
-